iio: adc: ad9081: Remove unreachable sample rate setting code

The sample rate configuration logic following the call to
ad9081_set_sample_rate() was unreachable due to an early return.
This patch removes the dead code block that attempted to round and set
the clock rate, which is now obsolete and no longer executed.
Cleaning up this unreachable code improves readability and avoids
confusion about the actual sample rate handling path.

Signed-off-by: Michael Hennerich <[email protected]>
(cherry picked from commit 169dfdb)

Author: mhennerich

drivers/iio/adc/ad9081.c

@@ -2682,7 +2682,6 @@ static int ad9081_write_raw(struct iio_dev *indio_dev,
 {
 	struct axiadc_converter *conv = iio_device_get_drvdata(indio_dev);
 	struct ad9081_phy *phy = conv->phy;
-	unsigned long r_clk;
 	int ret;
 
 	guard(mutex)(&conv->lock);
@@ -2699,18 +2698,6 @@ static int ad9081_write_raw(struct iio_dev *indio_dev,
 			return -EPERM;
 
 		return ad9081_set_sample_rate(conv, val);
-
-		r_clk = clk_round_rate(conv->clk, val);
-		if (r_clk < 0 || r_clk > conv->chip_info->max_rate) {
-			dev_warn(&conv->spi->dev,
-				 "Error setting ADC sample rate %ld", r_clk);
-			return -EINVAL;
-		}
-
-		ret = clk_set_rate(conv->clk, r_clk);
-		if (ret < 0)
-			return ret;
-		break;
 	case IIO_CHAN_INFO_ENABLE:
 		if (chan->output) {
 			u8 cddc_num, cddc_mask, fddc_num, fddc_mask;