Btrfs: Fix memory leak on finding existing super

We missed a memory deallocation in commit 450ba0ea.

If an existing super block is found at mount and there is no
error condition then the pre-allocated tree_root and fs_info
are no not used and are not freeded.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 61bd79abb805..f50253c2279d 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -654,6 +654,8 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
                 }
 
                 btrfs_close_devices(fs_devices);
+                kfree(fs_info);
+                kfree(tree_root);
         } else {
                 char b[BDEVNAME_SIZE];