ALSA: hda - unlock on error in azx_interrupt()

There is an spin_unlock() missing on this error path.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_intel.c

@@ -1266,8 +1266,10 @@ static irqreturn_t azx_interrupt(int irq, void *dev_id)
 
 	spin_lock(&chip->reg_lock);
 
-	if (chip->disabled)
+	if (chip->disabled) {
+		spin_unlock(&chip->reg_lock);
 		return IRQ_NONE;
+	}
 
 	status = azx_readl(chip, INTSTS);
 	if (status == 0) {