drm/amd/pp: Fix static checker warning

error: uninitialized symbol 'xxxx'
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/ppatomctrl.c

@@ -1104,10 +1104,8 @@ int atomctrl_get_voltage_evv_on_sclk(
 			GetIndexIntoMasterTable(COMMAND, GetVoltageInfo),
 			(uint32_t *)&get_voltage_info_param_space);
 
-	if (0 != result)
-		return result;
-
-	*voltage = le16_to_cpu(((GET_EVV_VOLTAGE_INFO_OUTPUT_PARAMETER_V1_2 *)
+	*voltage = result ? 0 :
+			le16_to_cpu(((GET_EVV_VOLTAGE_INFO_OUTPUT_PARAMETER_V1_2 *)
 				(&get_voltage_info_param_space))->usVoltageLevel);
 
 	return result;
@@ -1312,8 +1310,7 @@ int atomctrl_read_efuse(struct pp_hwmgr *hwmgr, uint16_t start_index,
 	result = amdgpu_atom_execute_table(adev->mode_info.atom_context,
 			GetIndexIntoMasterTable(COMMAND, ReadEfuseValue),
 			(uint32_t *)&efuse_param);
-	if (!result)
-		*efuse = le32_to_cpu(efuse_param.ulEfuseValue) & mask;
+	*efuse = result ? 0 : le32_to_cpu(efuse_param.ulEfuseValue) & mask;
 
 	return result;
 }
@@ -1354,11 +1351,8 @@ int atomctrl_get_voltage_evv_on_sclk_ai(struct pp_hwmgr *hwmgr, uint8_t voltage_
 			GetIndexIntoMasterTable(COMMAND, GetVoltageInfo),
 			(uint32_t *)&get_voltage_info_param_space);
 
-	if (0 != result)
-		return result;
-
-	*voltage = le32_to_cpu(((GET_EVV_VOLTAGE_INFO_OUTPUT_PARAMETER_V1_3 *)
-				(&get_voltage_info_param_space))->ulVoltageLevel);
+	*voltage = result ? 0 :
+		le32_to_cpu(((GET_EVV_VOLTAGE_INFO_OUTPUT_PARAMETER_V1_3 *)(&get_voltage_info_param_space))->ulVoltageLevel);
 
 	return result;
 }
@@ -1552,15 +1546,17 @@ void atomctrl_get_voltage_range(struct pp_hwmgr *hwmgr, uint32_t *max_vddc,
 		case CHIP_FIJI:
 			*max_vddc = le32_to_cpu(((ATOM_ASIC_PROFILING_INFO_V3_3 *)profile)->ulMaxVddc/4);
 			*min_vddc = le32_to_cpu(((ATOM_ASIC_PROFILING_INFO_V3_3 *)profile)->ulMinVddc/4);
-			break;
+			return;
 		case CHIP_POLARIS11:
 		case CHIP_POLARIS10:
 		case CHIP_POLARIS12:
 			*max_vddc = le32_to_cpu(((ATOM_ASIC_PROFILING_INFO_V3_6 *)profile)->ulMaxVddc/100);
 			*min_vddc = le32_to_cpu(((ATOM_ASIC_PROFILING_INFO_V3_6 *)profile)->ulMinVddc/100);
-			break;
-		default:
 			return;
+		default:
+			break;
 		}
 	}
+	*max_vddc = 0;
+	*min_vddc = 0;
 }

drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c

@@ -860,7 +860,8 @@ static void smu7_setup_voltage_range_from_vbios(struct pp_hwmgr *hwmgr)
 	struct phm_ppt_v1_clock_voltage_dependency_table *dep_sclk_table;
 	struct phm_ppt_v1_information *table_info =
 			(struct phm_ppt_v1_information *)(hwmgr->pptable);
-	uint32_t min_vddc, max_vddc;
+	uint32_t min_vddc = 0;
+	uint32_t max_vddc = 0;
 
 	if (!table_info)
 		return;

drivers/gpu/drm/amd/powerplay/smumgr/smu7_smumgr.c

@@ -283,11 +283,9 @@ int smu7_read_smc_sram_dword(struct pp_hwmgr *hwmgr, uint32_t smc_addr, uint32_t
 
 	result = smu7_set_smc_sram_address(hwmgr, smc_addr, limit);
 
-	if (result)
-		return result;
+	*value = result ? 0 : cgs_read_register(hwmgr->device, mmSMC_IND_DATA_11);
 
-	*value = cgs_read_register(hwmgr->device, mmSMC_IND_DATA_11);
-	return 0;
+	return result;
 }
 
 int smu7_write_smc_sram_dword(struct pp_hwmgr *hwmgr, uint32_t smc_addr, uint32_t value, uint32_t limit)