rapide: fix rapide_probe() return value

Return -ENOENT on ide_find_port() failure.

While at it:

- Cleanup rapide_probe() a bit.

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/arm/rapide.c

@@ -48,24 +48,26 @@ rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
 		goto release;
 	}
 
-	hwif = ide_find_port();
-	if (hwif) {
-		memset(&hw, 0, sizeof(hw));
-		rapide_setup_ports(&hw, base, base + 0x818, 1 << 6, ec->irq);
-		hw.chipset = ide_generic;
-		hw.dev = &ec->dev;
+	memset(&hw, 0, sizeof(hw));
+	rapide_setup_ports(&hw, base, base + 0x818, 1 << 6, ec->irq);
+	hw.chipset = ide_generic;
+	hw.dev = &ec->dev;
 
-		ide_init_port_hw(hwif, &hw);
+	hwif = ide_find_port();
+	if (hwif == NULL) {
+		ret = -ENOENT;
+		goto release;
+	}
 
-		default_hwif_mmiops(hwif);
+	ide_init_port_hw(hwif, &hw);
+	default_hwif_mmiops(hwif);
 
-		idx[0] = hwif->index;
+	idx[0] = hwif->index;
 
-		ide_device_add(idx, &rapide_port_info);
+	ide_device_add(idx, &rapide_port_info);
 
-		ecard_set_drvdata(ec, hwif);
-		goto out;
-	}
+	ecard_set_drvdata(ec, hwif);
+	goto out;
 
  release:
 	ecard_release_resources(ec);