ASoC: rt5514-spi: Convert to use devm_* API

Use devm_* API to simplify the code.
This patch also fixes the return value in probe error paths.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt5514-spi.c

@@ -410,32 +410,20 @@ static int rt5514_spi_probe(struct spi_device *spi)
 
 	rt5514_spi = spi;
 
-	ret = snd_soc_register_platform(&spi->dev, &rt5514_spi_platform);
+	ret = devm_snd_soc_register_platform(&spi->dev, &rt5514_spi_platform);
 	if (ret < 0) {
 		dev_err(&spi->dev, "Failed to register platform.\n");
-		goto err_plat;
+		return ret;
 	}
 
-	ret = snd_soc_register_component(&spi->dev, &rt5514_spi_dai_component,
-					 &rt5514_spi_dai, 1);
+	ret = devm_snd_soc_register_component(&spi->dev,
+					      &rt5514_spi_dai_component,
+					      &rt5514_spi_dai, 1);
 	if (ret < 0) {
 		dev_err(&spi->dev, "Failed to register component.\n");
-		goto err_comp;
+		return ret;
 	}
 
-	return 0;
-err_comp:
-	snd_soc_unregister_platform(&spi->dev);
-err_plat:
-
-	return 0;
-}
-
-static int rt5514_spi_remove(struct spi_device *spi)
-{
-	snd_soc_unregister_component(&spi->dev);
-	snd_soc_unregister_platform(&spi->dev);
-
 	return 0;
 }
 
@@ -451,7 +439,6 @@ static struct spi_driver rt5514_spi_driver = {
 		.of_match_table = of_match_ptr(rt5514_of_match),
 	},
 	.probe = rt5514_spi_probe,
-	.remove = rt5514_spi_remove,
 };
 module_spi_driver(rt5514_spi_driver);