replace IS_ERR/PTR_ERR
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
 #ifndef __tilegx__
        struct hvc_struct *hp;
        hp = hvc_alloc(0, 0, &hvc_tile_get_put_ops, 128);
-       return IS_ERR(hp) ? PTR_ERR(hp) : 0;
+       return PTR_ERR_OR_ZERO(hp);
 #else
        platform_device_register(&hvc_tile_pdev);
        return platform_driver_register(&hvc_tile_driver);