drm/amd/powerplay/hwmgr: don't add invalid voltage

if atomctrl_get_voltage_evv_on_sclk returns non zero (fail) in the expansion
of the PP_ASSERT_WITH_CODE macro the continue will actually do nothing
(The macro uses a do ... while(0) as scope, which eats the continue).
Based on the code I don't think this was the intent.
Unfortunately fixing this requires rewriting the control flow and
removing the macros.

v2: added signed of by
fixed error message print

v3: agd: drop DRM_ERROR
Signed-off-by: Moritz Kühner <kuehner.moritz@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -432,11 +432,9 @@ int tonga_get_evv_voltage(struct pp_hwmgr *hwmgr)
 						}
 					}
 				}
-				PP_ASSERT_WITH_CODE(0 == atomctrl_get_voltage_evv_on_sclk
+				if (0 == atomctrl_get_voltage_evv_on_sclk
 				    (hwmgr, VOLTAGE_TYPE_VDDGFX, sclk,
-						 virtual_voltage_id, &vddgfx),
-						"Error retrieving EVV voltage value!", continue);
-
+				     virtual_voltage_id, &vddgfx)) {
 					/* need to make sure vddgfx is less than 2v or else, it could burn the ASIC. */
 					PP_ASSERT_WITH_CODE((vddgfx < 2000 && vddgfx != 0), "Invalid VDDGFX value!", return -1);
 
@@ -446,17 +444,18 @@ int tonga_get_evv_voltage(struct pp_hwmgr *hwmgr)
 						data->vddcgfx_leakage.leakage_id[data->vddcgfx_leakage.count] = virtual_voltage_id;
 						data->vddcgfx_leakage.count++;
 					}
+				} else {
+					printk("Error retrieving EVV voltage value!\n");
+				}
 			}
 		} else {
 			/*  in merged mode we have only vddc EVV leakages */
 			if (0 == tonga_get_sclk_for_voltage_evv(hwmgr,
 						pptable_info->vddc_lookup_table,
 						virtual_voltage_id, &sclk)) {
-				PP_ASSERT_WITH_CODE(0 == atomctrl_get_voltage_evv_on_sclk
+				if (0 == atomctrl_get_voltage_evv_on_sclk
 				    (hwmgr, VOLTAGE_TYPE_VDDC, sclk,
-						 virtual_voltage_id, &vddc),
-						"Error retrieving EVV voltage value!", continue);
-
+				     virtual_voltage_id, &vddc)) {
 					/* need to make sure vddc is less than 2v or else, it could burn the ASIC. */
 					PP_ASSERT_WITH_CODE(vddc < 2000, "Invalid VDDC value!", return -1);
 
@@ -466,6 +465,9 @@ int tonga_get_evv_voltage(struct pp_hwmgr *hwmgr)
 						data->vddc_leakage.leakage_id[data->vddc_leakage.count] = virtual_voltage_id;
 						data->vddc_leakage.count++;
 					}
+				} else {
+					printk("Error retrieving EVV voltage value!\n");
+				}
 			}
 		}
 	}