[PATCH] xfs: fix a resource leak in xfs_alloc_buftarg()

[Haoxiang Li]

In the error path, call fs_put_dax() to drop the DAX
device reference.

Fixes: 6f643c57d57c ("xfs: implement ->notify_failure() for XFS")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Haoxiang Li <lihaoxiang@xxxxxxxxxxxxxxxx>
---
 fs/xfs/xfs_buf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 47edf3041631..1ca95ef46a73 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1831,6 +1831,7 @@ xfs_alloc_buftarg(
 	return btp;
 
 error_free:
+	fs_put_dax(btp->bt_daxdev, mp);
 	kfree(btp);
 	return ERR_PTR(error);
 }
-- 
2.25.1