iio: dac: ad5064: Use devm_* APIs

devm_* APIs are device managed and make code simpler.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/iio/dac/ad5064.c

@@ -442,7 +442,7 @@ static int ad5064_probe(struct device *dev, enum ad5064_type type,
 	unsigned int i;
 	int ret;
 
-	indio_dev = iio_device_alloc(sizeof(*st));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
 	if (indio_dev == NULL)
 		return  -ENOMEM;
 
@@ -456,23 +456,23 @@ static int ad5064_probe(struct device *dev, enum ad5064_type type,
 	for (i = 0; i < ad5064_num_vref(st); ++i)
 		st->vref_reg[i].supply = ad5064_vref_name(st, i);
 
-	ret = regulator_bulk_get(dev, ad5064_num_vref(st),
+	ret = devm_regulator_bulk_get(dev, ad5064_num_vref(st),
 		st->vref_reg);
 	if (ret) {
 		if (!st->chip_info->internal_vref)
-			goto error_free;
+			return ret;
 		st->use_internal_vref = true;
 		ret = ad5064_write(st, AD5064_CMD_CONFIG, 0,
 			AD5064_CONFIG_INT_VREF_ENABLE, 0);
 		if (ret) {
 			dev_err(dev, "Failed to enable internal vref: %d\n",
 				ret);
-			goto error_free;
+			return ret;
 		}
 	} else {
 		ret = regulator_bulk_enable(ad5064_num_vref(st), st->vref_reg);
 		if (ret)
-			goto error_free_reg;
+			return ret;
 	}
 
 	indio_dev->dev.parent = dev;
@@ -498,11 +498,6 @@ static int ad5064_probe(struct device *dev, enum ad5064_type type,
 error_disable_reg:
 	if (!st->use_internal_vref)
 		regulator_bulk_disable(ad5064_num_vref(st), st->vref_reg);
-error_free_reg:
-	if (!st->use_internal_vref)
-		regulator_bulk_free(ad5064_num_vref(st), st->vref_reg);
-error_free:
-	iio_device_free(indio_dev);
 
 	return ret;
 }
@@ -514,12 +509,8 @@ static int ad5064_remove(struct device *dev)
 
 	iio_device_unregister(indio_dev);
 
-	if (!st->use_internal_vref) {
+	if (!st->use_internal_vref)
 		regulator_bulk_disable(ad5064_num_vref(st), st->vref_reg);
-		regulator_bulk_free(ad5064_num_vref(st), st->vref_reg);
-	}
-
-	iio_device_free(indio_dev);
 
 	return 0;
 }