diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 73f706c9a342d2df19b871051ce596b059ae70d1..cf5aead95a7f6d2eac95c3cd47fc7d56cab92e4b 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -2478,6 +2478,7 @@ static void btrfs_qgroup_rescan_worker(struct btrfs_work *work)
 out:
 	kfree(scratch_leaf);
 	ulist_free(qgroups);
+	ulist_free(tmp);
 	btrfs_free_path(path);
 
 	mutex_lock(&fs_info->qgroup_rescan_lock);