ide: remove now superfluous check from ide_host_register()

There should be no functional changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-probe.c

@@ -1362,9 +1362,6 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
 		ide_init_port_hw(hwif, hws[i]);
 		ide_port_apply_params(hwif);
 
-		if (d == NULL) {
-			mate = NULL;
-		} else {
 		if ((i & 1) && mate) {
 			hwif->mate = mate;
 			mate->mate = hwif;
@@ -1374,8 +1371,6 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
 
 		ide_init_port(hwif, i & 1, d);
 		ide_port_cable_detect(hwif);
-		}
-
 		ide_port_init_devices(hwif);
 	}