ASoC: Convert sgtl5000 to use devm_kzalloc()

Convert sgtl5000 codec driver to use devm_kzalloc().
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/sgtl5000.c

@@ -1401,7 +1401,8 @@ static __devinit int sgtl5000_i2c_probe(struct i2c_client *client,
 	struct sgtl5000_priv *sgtl5000;
 	int ret;
 
-	sgtl5000 = kzalloc(sizeof(struct sgtl5000_priv), GFP_KERNEL);
+	sgtl5000 = devm_kzalloc(&client->dev, sizeof(struct sgtl5000_priv),
+								GFP_KERNEL);
 	if (!sgtl5000)
 		return -ENOMEM;
 
@@ -1409,22 +1410,13 @@ static __devinit int sgtl5000_i2c_probe(struct i2c_client *client,
 
 	ret = snd_soc_register_codec(&client->dev,
 			&sgtl5000_driver, &sgtl5000_dai, 1);
-	if (ret) {
-		dev_err(&client->dev, "Failed to register codec: %d\n", ret);
-		kfree(sgtl5000);
-		return ret;
-	}
-
-	return 0;
+	return ret;
 }
 
 static __devexit int sgtl5000_i2c_remove(struct i2c_client *client)
 {
-	struct sgtl5000_priv *sgtl5000 = i2c_get_clientdata(client);
-
 	snd_soc_unregister_codec(&client->dev);
 
-	kfree(sgtl5000);
 	return 0;
 }