ASoC: Convert wm8971 to devm_kzalloc()

Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm8971.c

@@ -686,7 +686,8 @@ static __devinit int wm8971_i2c_probe(struct i2c_client *i2c,
 	struct wm8971_priv *wm8971;
 	int ret;
 
-	wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
+	wm8971 = devm_kzalloc(&i2c->dev, sizeof(struct wm8971_priv),
+			      GFP_KERNEL);
 	if (wm8971 == NULL)
 		return -ENOMEM;
 
@@ -695,15 +696,13 @@ static __devinit int wm8971_i2c_probe(struct i2c_client *i2c,
 
 	ret = snd_soc_register_codec(&i2c->dev,
 			&soc_codec_dev_wm8971, &wm8971_dai, 1);
-	if (ret < 0)
-		kfree(wm8971);
+
 	return ret;
 }
 
 static __devexit int wm8971_i2c_remove(struct i2c_client *client)
 {
 	snd_soc_unregister_codec(&client->dev);
-	kfree(i2c_get_clientdata(client));
 	return 0;
 }