ASoC: twl4030: Convert to use devm_kzalloc

Allocate the private data with devm_kzalloc.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/twl4030.c

@@ -2237,7 +2237,8 @@ static int twl4030_soc_probe(struct snd_soc_codec *codec)
 {
 	struct twl4030_priv *twl4030;
 
-	twl4030 = kzalloc(sizeof(struct twl4030_priv), GFP_KERNEL);
+	twl4030 = devm_kzalloc(codec->dev, sizeof(struct twl4030_priv),
+			       GFP_KERNEL);
 	if (twl4030 == NULL) {
 		dev_err(codec->dev, "Can not allocate memory\n");
 		return -ENOMEM;
@@ -2259,7 +2260,6 @@ static int twl4030_soc_remove(struct snd_soc_codec *codec)
 	/* Reset registers to their chip default before leaving */
 	twl4030_reset_registers(codec);
 	twl4030_set_bias_level(codec, SND_SOC_BIAS_OFF);
-	kfree(twl4030);
 
 	if (pdata && pdata->hs_extmute && gpio_is_valid(pdata->hs_extmute_gpio))
 		gpio_free(pdata->hs_extmute_gpio);