drm/amdkfd: Fix return value 0 when execute_queues_cpsch fails

Signed-off-by: Yong Zhao <yong.zhao@amd.com>
Reviewed-by: Oak Zeng <oak.zeng@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c

@@ -1033,7 +1033,7 @@ static int destroy_queue_cpsch(struct device_queue_manager *dqm,
 
 	mutex_unlock(&dqm->lock);
 
-	return 0;
+	return retval;
 
 failed:
 failed_try_destroy_debugged_queue: