drm/amd/pm: fix return value in aldebaran_set_mp1_state()

For default cases,we should return 0. Otherwise resume will
abort because of the wrong return value.
Signed-off-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c

@@ -1856,10 +1856,8 @@ static int aldebaran_set_mp1_state(struct smu_context *smu,
 	case PP_MP1_STATE_UNLOAD:
 		return smu_cmn_set_mp1_state(smu, mp1_state);
 	default:
-		return -EINVAL;
-	}
-
 		return 0;
+	}
 }
 
 static const struct pptable_funcs aldebaran_ppt_funcs = {