ASoC: lm49453: Use devm_regmap_init_i2c()

devm_regmap_init_i2c() is device managed and makes error
handling and code cleanup simpler.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/lm49453.c

@@ -1497,7 +1497,7 @@ static __devinit int lm49453_i2c_probe(struct i2c_client *i2c,
 
 	i2c_set_clientdata(i2c, lm49453);
 
-	lm49453->regmap = regmap_init_i2c(i2c, &lm49453_regmap_config);
+	lm49453->regmap = devm_regmap_init_i2c(i2c, &lm49453_regmap_config);
 	if (IS_ERR(lm49453->regmap)) {
 		ret = PTR_ERR(lm49453->regmap);
 		dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
@@ -1508,21 +1508,15 @@ static __devinit int lm49453_i2c_probe(struct i2c_client *i2c,
 	ret =  snd_soc_register_codec(&i2c->dev,
 				      &soc_codec_dev_lm49453,
 				      lm49453_dai, ARRAY_SIZE(lm49453_dai));
-	if (ret < 0) {
+	if (ret < 0)
 		dev_err(&i2c->dev, "Failed to register codec: %d\n", ret);
-		regmap_exit(lm49453->regmap);
-		return ret;
-	}
 
 	return ret;
 }
 
 static int __devexit lm49453_i2c_remove(struct i2c_client *client)
 {
-	struct lm49453_priv *lm49453 = i2c_get_clientdata(client);
-
 	snd_soc_unregister_codec(&client->dev);
-	regmap_exit(lm49453->regmap);
 	return 0;
 }