hwmon: (s3c-hwmon) Use devm_kzalloc instead of kzalloc

This makes the code simpler as explicit freeing is not needed.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/s3c-hwmon.c

@@ -288,7 +288,7 @@ static int __devinit s3c_hwmon_probe(struct platform_device *dev)
 		return -EINVAL;
 	}
 
-	hwmon = kzalloc(sizeof(struct s3c_hwmon), GFP_KERNEL);
+	hwmon = devm_kzalloc(&dev->dev, sizeof(struct s3c_hwmon), GFP_KERNEL);
 	if (hwmon == NULL) {
 		dev_err(&dev->dev, "no memory\n");
 		return -ENOMEM;
@@ -303,8 +303,7 @@ static int __devinit s3c_hwmon_probe(struct platform_device *dev)
 	hwmon->client = s3c_adc_register(dev, NULL, NULL, 0);
 	if (IS_ERR(hwmon->client)) {
 		dev_err(&dev->dev, "cannot register adc\n");
-		ret = PTR_ERR(hwmon->client);
-		goto err_mem;
+		return PTR_ERR(hwmon->client);
 	}
 
 	/* add attributes for our adc devices. */
@@ -363,8 +362,6 @@ static int __devinit s3c_hwmon_probe(struct platform_device *dev)
  err_registered:
 	s3c_adc_release(hwmon->client);
 
- err_mem:
-	kfree(hwmon);
 	return ret;
 }