[PATCH v3 5/8] iio: adc: ti-ads1015: use dev_err_probe() for error handling

[Archit Anant <architanant5@gmail.com>]

Simplify the error handling paths in ads1015_probe() and
ads1015_client_get_channels_config()  by converting dev_err()
calls that are immediately followed by a return statement
over to the modern dev_err_probe() helper.

Note: This patch takes advantage of the previously introduced
local 'dev' pointer when converting the legacy
dev_err(&client->dev, ...) calls, avoiding unnecessary
code churn.

Suggested-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Archit Anant <architanant5@gmail.com>
---
 drivers/iio/adc/ti-ads1015.c | 32 ++++++++++++++------------------
 1 file changed, 14 insertions(+), 18 deletions(-)

diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c
index c88904d7190d..895bce7859d2 100644
--- a/drivers/iio/adc/ti-ads1015.c
+++ b/drivers/iio/adc/ti-ads1015.c
@@ -883,18 +883,16 @@ static int ads1015_client_get_channels_config(struct i2c_client *client)
 
 		if (!fwnode_property_read_u32(node, "ti,gain", &pval)) {
 			pga = pval;
-			if (pga > 5) {
-				dev_err(dev, "invalid gain on %pfw\n", node);
-				return -EINVAL;
-			}
+			if (pga > 5)
+				return dev_err_probe(dev, -EINVAL,
+						     "invalid gain on %pfw\n", node);
 		}
 
 		if (!fwnode_property_read_u32(node, "ti,datarate", &pval)) {
 			data_rate = pval;
-			if (data_rate > 7) {
-				dev_err(dev, "invalid data_rate on %pfw\n", node);
-				return -EINVAL;
-			}
+			if (data_rate > 7)
+				return dev_err_probe(dev, -EINVAL,
+						     "invalid data_rate on %pfw\n", node);
 		}
 
 		data->channel_data[channel].pga = pga;
@@ -978,18 +976,16 @@ static int ads1015_probe(struct i2c_client *client)
 	data->regmap = devm_regmap_init_i2c(client, chip->has_comparator ?
 					    &ads1015_regmap_config :
 					    &tla2024_regmap_config);
-	if (IS_ERR(data->regmap)) {
-		dev_err(&client->dev, "Failed to allocate register map\n");
-		return PTR_ERR(data->regmap);
-	}
+	if (IS_ERR(data->regmap))
+		return dev_err_probe(dev, PTR_ERR(data->regmap),
+				     "Failed to allocate register map\n");
 
 	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
 					      ads1015_trigger_handler,
 					      &ads1015_buffer_setup_ops);
-	if (ret < 0) {
-		dev_err(&client->dev, "iio triggered buffer setup failed\n");
-		return ret;
-	}
+	if (ret < 0)
+		return dev_err_probe(dev, ret,
+				     "iio triggered buffer setup failed\n");
 
 	if (client->irq && chip->has_comparator) {
 		unsigned long irq_trig = irq_get_trigger_type(client->irq);
@@ -1042,10 +1038,10 @@ static int ads1015_probe(struct i2c_client *client)
 
 	ret = iio_device_register(indio_dev);
 	if (ret < 0) {
-		dev_err(&client->dev, "Failed to register IIO device\n");
 		pm_runtime_disable(dev);
 		pm_runtime_set_suspended(dev);
-		return ret;
+		return dev_err_probe(dev, ret,
+				     "Failed to register IIO device\n");
 	}
 
 	return 0;
-- 
2.39.5