ASoC: wm8993: 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/wm8993.c

@@ -1660,7 +1660,7 @@ static __devinit int wm8993_i2c_probe(struct i2c_client *i2c,
 	wm8993->dev = &i2c->dev;
 	init_completion(&wm8993->fll_lock);
 
-	wm8993->regmap = regmap_init_i2c(i2c, &wm8993_regmap);
+	wm8993->regmap = devm_regmap_init_i2c(i2c, &wm8993_regmap);
 	if (IS_ERR(wm8993->regmap)) {
 		ret = PTR_ERR(wm8993->regmap);
 		dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
@@ -1676,14 +1676,14 @@ static __devinit int wm8993_i2c_probe(struct i2c_client *i2c,
 				 wm8993->supplies);
 	if (ret != 0) {
 		dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
-		goto err;
+		return ret;
 	}
 
 	ret = regulator_bulk_enable(ARRAY_SIZE(wm8993->supplies),
 				    wm8993->supplies);
 	if (ret != 0) {
 		dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
-		goto err;
+		return ret;
 	}
 
 	ret = regmap_read(wm8993->regmap, WM8993_SOFTWARE_RESET, &reg);
@@ -1742,8 +1742,6 @@ static __devinit int wm8993_i2c_probe(struct i2c_client *i2c,
 		free_irq(i2c->irq, wm8993);
 err_enable:
 	regulator_bulk_disable(ARRAY_SIZE(wm8993->supplies), wm8993->supplies);
-err:
-	regmap_exit(wm8993->regmap);
 	return ret;
 }
 
@@ -1754,7 +1752,6 @@ static __devexit int wm8993_i2c_remove(struct i2c_client *i2c)
 	snd_soc_unregister_codec(&i2c->dev);
 	if (i2c->irq)
 		free_irq(i2c->irq, wm8993);
-	regmap_exit(wm8993->regmap);
 	regulator_bulk_disable(ARRAY_SIZE(wm8993->supplies), wm8993->supplies);
 
 	return 0;