btrfs: Remove fs_info argument from btrfs_update_commit_device_bytes_used

We already pass the btrfs_transaction which references fs_info so no
need to pass the later as an argument. Also use the opportunity to
shorten transaction->trans. No functional changes.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 4daf51f..f6a33f4 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -2246,7 +2246,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans)
 	       sizeof(*fs_info->super_copy));
 
 	btrfs_update_commit_device_size(fs_info);
-	btrfs_update_commit_device_bytes_used(fs_info, cur_trans);
+	btrfs_update_commit_device_bytes_used(cur_trans);
 
 	clear_bit(BTRFS_FS_LOG1_ERR, &fs_info->flags);
 	clear_bit(BTRFS_FS_LOG2_ERR, &fs_info->flags);