ASoC: codecs: ssm2305: Use dev_err_probe() helper

Use the dev_err_probe() helper, instead of open-coding the same
operation.

Signed-off-by: Kuninori Morimoto <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/codecs/ssm2305.c

···
 {
 	struct device *dev = &pdev->dev;
 	struct ssm2305 *priv;
-	int err;
 
 	/* Allocate the private data */
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
···
 	/* Get shutdown gpio */
 	priv->gpiod_shutdown = devm_gpiod_get(dev, "shutdown",
 					      GPIOD_OUT_LOW);
-	if (IS_ERR(priv->gpiod_shutdown)) {
-		err = PTR_ERR(priv->gpiod_shutdown);
-		if (err != -EPROBE_DEFER)
-			dev_err(dev, "Failed to get 'shutdown' gpio: %d\n",
-				err);
-		return err;
-	}
+	if (IS_ERR(priv->gpiod_shutdown))
+		return dev_err_probe(dev, PTR_ERR(priv->gpiod_shutdown),
+				     "Failed to get 'shutdown' gpio\n");
 
 	return devm_snd_soc_register_component(dev, &ssm2305_component_driver,
 					       NULL, 0);