Btrfs: fix memory leak in start_transaction()

Free btrfs_trans_handle when join_transaction() fails
in start_transaction()

Signed-off-by: Yoshinori Sano <yoshinori.sano@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index ce48eb59d615..d01cc249a8d3 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -197,6 +197,7 @@ again:
 
         ret = join_transaction(root);
         if (ret < 0) {
+                kmem_cache_free(btrfs_trans_handle_cachep, h);
                 if (type != TRANS_JOIN_NOLOCK)
                         mutex_unlock(&root->fs_info->trans_mutex);
                 return ERR_PTR(ret);