--- x/fs/btrfs/sysfs.c
+++ y/fs/btrfs/sysfs.c
@@ -2282,8 +2282,11 @@ int btrfs_sysfs_add_qgroups(struct btrfs
 
 	ret = kobject_init_and_add(fs_info->qgroups_kobj, &qgroups_ktype,
 				   fsid_kobj, "qgroups");
-	if (ret < 0)
-		goto out;
+	if (ret < 0) {
+		kobject_put(fs_info->qgroups_kobj);
+		fs_info->qgroups_kobj = NULL;
+		return ret;
+	}
 
 	rbtree_postorder_for_each_entry_safe(qgroup, next,
 					     &fs_info->qgroup_tree, node) {