iio: frequency: adrf6780: Benefit from devm_clk_get_enabled() to simplify

Make use of devm_clk_get_enabled() to replace some code that effectively
open codes this new function.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20220808204740.307667-12-u.kleine-koenig@pengutronix.deSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/frequency/adrf6780.c

@@ -441,11 +441,6 @@ static void adrf6780_properties_parse(struct adrf6780_state *st)
 	st->vdet_out_en = device_property_read_bool(&spi->dev, "adi,vdet-out-en");
 }
 
-static void adrf6780_clk_disable(void *data)
-{
-	clk_disable_unprepare(data);
-}
-
 static void adrf6780_powerdown(void *data)
 {
 	/* Disable all components in the Enable Register */
@@ -473,20 +468,11 @@ static int adrf6780_probe(struct spi_device *spi)
 
 	adrf6780_properties_parse(st);
 
-	st->clkin = devm_clk_get(&spi->dev, "lo_in");
+	st->clkin = devm_clk_get_enabled(&spi->dev, "lo_in");
 	if (IS_ERR(st->clkin))
 		return dev_err_probe(&spi->dev, PTR_ERR(st->clkin),
 				     "failed to get the LO input clock\n");
 
-	ret = clk_prepare_enable(st->clkin);
-	if (ret)
-		return ret;
-
-	ret = devm_add_action_or_reset(&spi->dev, adrf6780_clk_disable,
-				       st->clkin);
-	if (ret)
-		return ret;
-
 	mutex_init(&st->lock);
 
 	ret = adrf6780_init(st);