airo: remove unnecessary break after return

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wireless/airo.c

@@ -7818,7 +7818,6 @@ static int readrids(struct net_device *dev, aironet_ioctl *comp) {
 	case AIRORRID:      ridcode = comp->ridnum;     break;
 	default:
 		return -EINVAL;
-		break;
 	}
 
 	if ((iobuf = kmalloc(RIDSIZE, GFP_KERNEL)) == NULL)