drm/amd/display: fix error case handling

Otherwise, we will run into error case path.

v2: fix build when CONFIG_DRM_AMD_DC_DCN is not set
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -4211,11 +4211,12 @@ static int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev)
 			}
 			break;
 		default:
-			break;
+			DRM_ERROR("Unsupported DCE IP versions: 0x%X\n",
+					adev->ip_versions[DCE_HWIP]);
+			goto fail;
 		}
 #endif
-		DRM_ERROR("Unsupported ASIC type: 0x%X\n", adev->asic_type);
-		goto fail;
+		break;
 	}
 
 	return 0;
@@ -4394,11 +4395,12 @@ static int dm_early_init(void *handle)
 			adev->mode_info.num_dig = 4;
 			break;
 		default:
-			break;
+			DRM_ERROR("Unsupported DCE IP versions: 0x%x\n",
+					adev->ip_versions[DCE_HWIP]);
+			return -EINVAL;
 		}
 #endif
-		DRM_ERROR("Unsupported ASIC type: 0x%X\n", adev->asic_type);
-		return -EINVAL;
+		break;
 	}
 
 	amdgpu_dm_set_irq_funcs(adev);