drm/xe: Return NULL in case of drmm_add_action_or_reset failure

In case of drmm_add_action_or_reset failure return NULL and no need
to print warning messages as they will be printed implictly.

Cc: Tejas Upadhyay <tejas.upadhyay@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240412181211.1155732-5-himal.prasad.ghimiray@intel.comSigned-off-by: Lucas De Marchi <lucas.demarchi@intel.com>

drivers/gpu/drm/xe/xe_hw_engine_class_sysfs.c

@@ -520,9 +520,8 @@ kobj_xe_hw_engine_class(struct xe_device *xe, struct kobject *parent, const char
 	err = drmm_add_action_or_reset(&xe->drm, kobj_xe_hw_engine_class_fini,
 				       &keclass->base);
 	if (err)
-		drm_warn(&xe->drm,
-			 "%s: drmm_add_action_or_reset failed, err: %d\n",
-			 __func__, err);
+		return NULL;
+
 	return keclass;
 }
 
@@ -553,13 +552,8 @@ static int xe_add_hw_engine_class_defaults(struct xe_device *xe,
 	if (err)
 		goto err_object;
 
-	err = drmm_add_action_or_reset(&xe->drm, hw_engine_class_defaults_fini,
-				       kobj);
-	if (err)
-		drm_warn(&xe->drm,
-			 "%s: drmm_add_action_or_reset failed, err: %d\n",
-			 __func__, err);
-	return err;
+	return drmm_add_action_or_reset(&xe->drm, hw_engine_class_defaults_fini, kobj);
+
 err_object:
 	kobject_put(kobj);
 	return err;
@@ -708,14 +702,8 @@ int xe_hw_engine_class_sysfs_init(struct xe_gt *gt)
 			goto err_object;
 	}
 
-	err = drmm_add_action_or_reset(&xe->drm, hw_engine_class_sysfs_fini,
-				       kobj);
-	if (err)
-		drm_warn(&xe->drm,
-			 "%s: drmm_add_action_or_reset failed, err: %d\n",
-			 __func__, err);
+	return drmm_add_action_or_reset(&xe->drm, hw_engine_class_sysfs_fini, kobj);
 
-	return err;
 err_object:
 	kobject_put(kobj);
 	return err;