xfs: remove xfs_bmapi_write() firstblock param

All callers pass ->t_firstblock from the current transaction.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
index 18d9b4d..94301b6 100644
--- a/fs/xfs/xfs_symlink.c
+++ b/fs/xfs/xfs_symlink.c
@@ -288,8 +288,7 @@ xfs_symlink(
 		nmaps = XFS_SYMLINK_MAPS;
 
 		error = xfs_bmapi_write(tp, ip, first_fsb, fs_blocks,
-				  XFS_BMAPI_METADATA, &tp->t_firstblock,
-				  resblks, mval, &nmaps);
+				  XFS_BMAPI_METADATA, resblks, mval, &nmaps);
 		if (error)
 			goto out_bmap_cancel;