btrfs: fix memory leak during RAID 5/6 device replacement

A 'struct bio' is allocated in scrub_missing_raid56_pages(), but it was never
freed anywhere.

Signed-off-by: Scott Talbert <scott.talbert@hgst.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index d270c700ed31..fa35cdc46494 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -2127,6 +2127,8 @@ static void scrub_missing_raid56_end_io(struct bio *bio)
         if (bio->bi_error)
                 sblock->no_io_error_seen = 0;
 
+        bio_put(bio);
+
         btrfs_queue_work(fs_info->scrub_workers, &sblock->work);
 }