ASoC: Tegra: Don't return mclk_changed from utils_set_rate

Only the clock programming code needs to know whether the clocks changed,
and that is encapsulated within tegra_asoc_utils_set_rate(). The machine
driver's call to snd_soc_dai_set_sysclk(codec_dai, ...) is safe
irrespective of whether the clocks changed.

(Applying Mark's TrimSlice review comments to the existing driver)

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/tegra/tegra_asoc_utils.c b/sound/soc/tegra/tegra_asoc_utils.c
index 52f0a3f..dfa85cb 100644
--- a/sound/soc/tegra/tegra_asoc_utils.c
+++ b/sound/soc/tegra/tegra_asoc_utils.c
@@ -28,9 +28,10 @@
 #include "tegra_asoc_utils.h"
 
 int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
-			      int mclk, int *mclk_change)
+			      int mclk)
 {
 	int new_baseclock;
+	bool clk_change;
 	int err;
 
 	switch (srate) {
@@ -52,10 +53,10 @@
 		return -EINVAL;
 	}
 
-	*mclk_change = ((new_baseclock != data->set_baseclock) ||
+	clk_change = ((new_baseclock != data->set_baseclock) ||
 			(mclk != data->set_mclk));
-	if (!*mclk_change)
-	    return 0;
+	if (!clk_change)
+		return 0;
 
 	data->set_baseclock = 0;
 	data->set_mclk = 0;