++ b/drivers/media/mc/mc-devnode.c
@@ -276,13 +276,10 @@ void media_devnode_unregister(struct media_devnode *devnode)
 	/* Delete the cdev on this minor as well */
 	cdev_device_del(&devnode->cdev, &devnode->dev);
 	devnode->media_dev = NULL;
+	clear_bit(devnode->minor, media_devnode_nums);
 	mutex_unlock(&media_devnode_lock);
 
 	put_device(&devnode->dev);
-
-	mutex_lock(&media_devnode_lock);
-	clear_bit(devnode->minor, media_devnode_nums);
-	mutex_unlock(&media_devnode_lock);
 }
 
 /*FAILED: patch "[PATCH] media: mc: Clear minor number before put device" failed to apply to 5.10-stable tree<gregkh@linuxfoundation.org> undefinedeadavis@qq.com,hverkuil+cisco@kernel.org,sakari.ailus@linux.intel.com undefined undefined undefined undefined“"ƒŽ{