Btrfs: fix inode leak on kmalloc failure in tree-log.c

In tree-log.c:replay_one_name(), if memory allocation for
the name fails, ensure we iput the dir inode we got before
before we return.

Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index ff60d8978ae2..6797a931cf62 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -1536,8 +1536,10 @@ static noinline int replay_one_name(struct btrfs_trans_handle *trans,
 
         name_len = btrfs_dir_name_len(eb, di);
         name = kmalloc(name_len, GFP_NOFS);
-        if (!name)
-                return -ENOMEM;
+        if (!name) {
+                ret = -ENOMEM;
+                goto out;
+        }
 
         log_type = btrfs_dir_type(eb, di);
         read_extent_buffer(eb, name, (unsigned long)(di + 1),