ALSA: mtpav - Fix race in probe

Ingo reported Oops at probing mtpav driver.  It's a race between
the irq handler and the rawmidi instance registration.

This patch fixes the order of registration to avoid the race.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Tested-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NJaroslav Kysela <perex@perex.cz>

sound/drivers/mtpav.c

@@ -715,6 +715,10 @@ static int __devinit snd_mtpav_probe(struct platform_device *dev)
 
 	card->private_free = snd_mtpav_free;
 
+	err = snd_mtpav_get_RAWMIDI(mtp_card);
+	if (err < 0)
+		goto __error;
+
 	err = snd_mtpav_get_ISA(mtp_card);
 	if (err < 0)
 		goto __error;
@@ -724,10 +728,6 @@ static int __devinit snd_mtpav_probe(struct platform_device *dev)
 	snprintf(card->longname, sizeof(card->longname),
 		 "MTPAV on parallel port at 0x%lx", port);
 
-	err = snd_mtpav_get_RAWMIDI(mtp_card);
-	if (err < 0)
-		goto __error;
-
 	snd_mtpav_portscan(mtp_card);
 
 	snd_card_set_dev(card, &dev->dev);