xfs: fix coccinelle warnings

Removes unneeded semicolon, introduced by commit a70a4fa5 ("xfs: fix
a couple error sequence jumps in xfs_mountfs"):

fs/xfs/xfs_mount.c:858:24-25: Unneeded semicolon

Generated by: scripts/coccinelle/misc/semicolon.cocci
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Reviewed-by: NBrian Foster <bfoster@redhat.com>
Signed-off-by: NDave Chinner <david@fromorbit.com>

fs/xfs/xfs_mount.c

@@ -863,7 +863,7 @@ xfs_mountfs(
 	     !mp->m_sb.sb_inprogress) {
 		error = xfs_initialize_perag_data(mp, sbp->sb_agcount);
 		if (error)
-			goto out_log_dealloc;;
+			goto out_log_dealloc;
 	}
 
 	/*