iio: adc: ad7124: Benefit of dev = indio_dev->dev.parent in ad7124_parse_channel_config()

Since commit a6eaf02 ("iio: adc: ad7124: Switch from of specific to
fwnode based property handling") the function
ad7124_parse_channel_config() has a parameter `dev` that holds
the value `indio_dev->dev.parent`. Make use of that to shorten two code
lines.

Signed-off-by: Uwe Kleine-König <[email protected]>
Link: https://patch.msgid.link/v7l2skqj65vbku3ebjsfndfj3atl6iqpodamios2do6q6kcagf@whmuir6fwede
Signed-off-by: Jonathan Cameron <[email protected]>

Author: ukleinek

drivers/iio/adc/ad7124.c

@@ -1060,12 +1060,12 @@ static int ad7124_parse_channel_config(struct iio_dev *indio_dev,
 	/* Add one for temperature */
 	st->num_channels = min(num_channels + 1, AD7124_MAX_CHANNELS);
 
-	chan = devm_kcalloc(indio_dev->dev.parent, st->num_channels,
+	chan = devm_kcalloc(dev, st->num_channels,
 			    sizeof(*chan), GFP_KERNEL);
 	if (!chan)
 		return -ENOMEM;
 
-	channels = devm_kcalloc(indio_dev->dev.parent, st->num_channels, sizeof(*channels),
+	channels = devm_kcalloc(dev, st->num_channels, sizeof(*channels),
 				GFP_KERNEL);
 	if (!channels)
 		return -ENOMEM;