[ALSA] Fix possible races at free_irq in PCI drivers

The irq handler of PCI drivers must be released before releasing other
resources since the handler for a shared irq can be still called and
may access the freed resource again.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/nm256/nm256.c

@@ -1439,7 +1439,7 @@ static int snd_nm256_free(struct nm256 *chip)
 		snd_nm256_capture_stop(chip);
 
 	if (chip->irq >= 0)
-		synchronize_irq(chip->irq);
+		free_irq(chip->irq, chip);
 
 	if (chip->cport)
 		iounmap(chip->cport);
@@ -1447,8 +1447,6 @@ static int snd_nm256_free(struct nm256 *chip)
 		iounmap(chip->buffer);
 	release_and_free_resource(chip->res_cport);
 	release_and_free_resource(chip->res_buffer);
-	if (chip->irq >= 0)
-		free_irq(chip->irq, chip);
 
 	pci_disable_device(chip->pci);
 	kfree(chip->ac97_regs);