[PATCH] fix init_irq

The patch is obviously correct and has been floating on lkml for some time.

From Manfred Spraul:
 "My init_irq cleanup introduced a bug: on error, the function must return 1."

drivers/ide/ide-probe.c

@@ -1214,7 +1214,7 @@ static int init_irq (ide_hwif_t *hwif)
 	spin_unlock_irq(&ide_lock);
 out_up:
 	up(&ide_cfg_sem);
-	return 0;
+	return 1;
 }
 
 static int ata_lock(dev_t dev, void *data)