regulator: lp397x: use devm_kzalloc() to make cleanup paths simpler

Signed-off-by: Nikolay Balandin <nbalandin@dev.rtsoft.ru>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

drivers/regulator/lp3971.c

@@ -434,7 +434,7 @@ static int lp3971_i2c_probe(struct i2c_client *i2c,
 		return -ENODEV;
 	}
 
-	lp3971 = kzalloc(sizeof(struct lp3971), GFP_KERNEL);
+	lp3971 = devm_kzalloc(&i2c->dev, sizeof(struct lp3971), GFP_KERNEL);
 	if (lp3971 == NULL)
 		return -ENOMEM;
 
@@ -449,19 +449,15 @@ static int lp3971_i2c_probe(struct i2c_client *i2c,
 		ret = -ENODEV;
 	if (ret < 0) {
 		dev_err(&i2c->dev, "failed to detect device\n");
-		goto err_detect;
+		return ret;
 	}
 
 	ret = setup_regulators(lp3971, pdata);
 	if (ret < 0)
-		goto err_detect;
+		return ret;
 
 	i2c_set_clientdata(i2c, lp3971);
 	return 0;
-
-err_detect:
-	kfree(lp3971);
-	return ret;
 }
 
 static int lp3971_i2c_remove(struct i2c_client *i2c)
@@ -473,7 +469,6 @@ static int lp3971_i2c_remove(struct i2c_client *i2c)
 		regulator_unregister(lp3971->rdev[i]);
 
 	kfree(lp3971->rdev);
-	kfree(lp3971);
 
 	return 0;
 }

drivers/regulator/lp3972.c

@@ -528,7 +528,7 @@ static int lp3972_i2c_probe(struct i2c_client *i2c,
 		return -ENODEV;
 	}
 
-	lp3972 = kzalloc(sizeof(struct lp3972), GFP_KERNEL);
+	lp3972 = devm_kzalloc(&i2c->dev, sizeof(struct lp3972), GFP_KERNEL);
 	if (!lp3972)
 		return -ENOMEM;
 
@@ -546,19 +546,15 @@ static int lp3972_i2c_probe(struct i2c_client *i2c,
 	}
 	if (ret < 0) {
 		dev_err(&i2c->dev, "failed to detect device. ret = %d\n", ret);
-		goto err_detect;
+		return ret;
 	}
 
 	ret = setup_regulators(lp3972, pdata);
 	if (ret < 0)
-		goto err_detect;
+		return ret;
 
 	i2c_set_clientdata(i2c, lp3972);
 	return 0;
-
-err_detect:
-	kfree(lp3972);
-	return ret;
 }
 
 static int lp3972_i2c_remove(struct i2c_client *i2c)
@@ -569,7 +565,6 @@ static int lp3972_i2c_remove(struct i2c_client *i2c)
 	for (i = 0; i < lp3972->num_regulators; i++)
 		regulator_unregister(lp3972->rdev[i]);
 	kfree(lp3972->rdev);
-	kfree(lp3972);
 
 	return 0;
 }