ALSA: maestro3: Use common error handling code in two functions

Add jump targets so that a bit of exception handling can be better reused
at the end of these functions.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <[e-mail]>
Signed-off-by: Takashi Iwai <[e-mail]>

sound/pci/maestro3.c

···
 
 	err = request_firmware(&chip->assp_kernel_image,
 			       "ess/maestro3_assp_kernel.fw", &pci->dev);
-	if (err < 0) {
-		snd_m3_free(chip);
-		return err;
-	}
+	if (err < 0)
+		goto free_chip;
 
 	err = request_firmware(&chip->assp_minisrc_image,
 			       "ess/maestro3_assp_minisrc.fw", &pci->dev);
-	if (err < 0) {
-		snd_m3_free(chip);
-		return err;
-	}
+	if (err < 0)
+		goto free_chip;
 
-	if ((err = pci_request_regions(pci, card->driver)) < 0) {
-		snd_m3_free(chip);
-		return err;
-	}
+	err = pci_request_regions(pci, card->driver);
+	if (err < 0)
+		goto free_chip;
+
 	chip->iobase = pci_resource_start(pci, 0);
 	
 	/* just to be sure */
···
 	if (request_irq(pci->irq, snd_m3_interrupt, IRQF_SHARED,
 			KBUILD_MODNAME, chip)) {
 		dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
-		snd_m3_free(chip);
-		return -ENOMEM;
+		err = -ENOMEM;
+		goto free_chip;
 	}
 	chip->irq = pci->irq;
 
···
 		dev_warn(card->dev, "can't allocate apm buffer\n");
 #endif
 
-	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
-		snd_m3_free(chip);
-		return err;
-	}
+	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
+	if (err < 0)
+		goto free_chip;
 
 	if ((err = snd_m3_mixer(chip)) < 0)
 		return err;
···
 	*chip_ret = chip;
 
 	return 0; 
+
+free_chip:
+	snd_m3_free(chip);
+	return err;
 }
 
 /*
···
 		break;
 	}
 
-	if ((err = snd_m3_create(card, pci,
-				 external_amp[dev],
-				 amp_gpio[dev],
-				 &chip)) < 0) {
-		snd_card_free(card);
-		return err;
-	}
+	err = snd_m3_create(card, pci, external_amp[dev], amp_gpio[dev], &chip);
+	if (err < 0)
+		goto free_card;
+
 	card->private_data = chip;
 
 	sprintf(card->shortname, "ESS %s PCI", card->driver);
 	sprintf(card->longname, "%s at 0x%lx, irq %d",
 		card->shortname, chip->iobase, chip->irq);
 
-	if ((err = snd_card_register(card)) < 0) {
-		snd_card_free(card);
-		return err;
-	}
+	err = snd_card_register(card);
+	if (err < 0)
+		goto free_card;
 
 #if 0 /* TODO: not supported yet */
 	/* TODO enable MIDI IRQ and I/O */
···
 	pci_set_drvdata(pci, card);
 	dev++;
 	return 0;
+
+free_card:
+	snd_card_free(card);
+	return err;
 }
 
 static void snd_m3_remove(struct pci_dev *pci)