[XFS] Remove unused argument to xfs_bmap_finish

The firstblock argument to xfs_bmap_finish is not used by that function.
Remove it and cleanup the code a bit.

Patch provided by Eric Sandeen.

SGI-PV: 960196
SGI-Modid: xfs-linux-melb:xfs-kern:28034a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 295577d..7efcf25 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1699,8 +1699,7 @@
 		 * Duplicate the transaction that has the permanent
 		 * reservation and commit the old transaction.
 		 */
-		error = xfs_bmap_finish(tp, &free_list, first_block,
-					&committed);
+		error = xfs_bmap_finish(tp, &free_list, &committed);
 		ntp = *tp;
 		if (error) {
 			/*