btrfs-progs: add missing free operation of raid_map for raid56

We forgot free raid_map for raid56's map_bio.
This patch add it.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/disk-io.c b/disk-io.c
index fdcfd6dd..46a5a46d 100644
--- a/disk-io.c
+++ b/disk-io.c
@@ -428,6 +428,7 @@ int write_and_map_eb(struct btrfs_trans_handle *trans,
 		ret = write_extent_to_disk(eb);
 		BUG_ON(ret);
 	}
+	kfree(raid_map);
 	kfree(multi);
 	return 0;
 }