ASoC: lpass-wsa-macro: add missing test

cppcheck warning:

sound/soc/codecs/lpass-wsa-macro.c:958:6: style: Variable 'ret' is
reassigned a value before the old one has been
used. [redundantAssignment]
 ret = wsa_macro_set_prim_interpolator_rate(dai, (u8) rate_val, sample_rate);
     ^
sound/soc/codecs/lpass-wsa-macro.c:946:6: note: ret is assigned
 ret = wsa_macro_set_mix_interpolator_rate(dai, (u8) rate_val, sample_rate);
     ^
sound/soc/codecs/lpass-wsa-macro.c:958:6: note: ret is overwritten
 ret = wsa_macro_set_prim_interpolator_rate(dai, (u8) rate_val, sample_rate);
     ^

set_mix_interpolator_rate can return -EINVAL, add a test and bail on error.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210218222916.89809-11-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/lpass-wsa-macro.c

@@ -944,6 +944,8 @@ static int wsa_macro_set_interpolator_rate(struct snd_soc_dai *dai,
 		goto prim_rate;
 
 	ret = wsa_macro_set_mix_interpolator_rate(dai, (u8) rate_val, sample_rate);
+	if (ret < 0)
+		return ret;
 prim_rate:
 	/* set primary path sample rate */
 	for (i = 0; i < ARRAY_SIZE(int_prim_sample_rate_val); i++) {