staging: iio: ad7746: Adjust arguments to match open parenthesis

Clear a couple more checkpatch.pl CHECKS.
Signed-off-by: Hernán Gonzalez <hernan@vanguardiasur.com.ar>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/staging/iio/cdc/ad7746.c

@@ -556,7 +556,8 @@ static int ad7746_read_raw(struct iio_dev *indio_dev,
 		/* Now read the actual register */
 
 		ret = i2c_smbus_read_i2c_block_data(chip->client,
-			chan->address >> 8, 3, &chip->data.d8[1]);
+						    chan->address >> 8, 3,
+						    &chip->data.d8[1]);
 
 		if (ret < 0)
 			goto out;