ASoC: wcd9335: clarify return value

ASoC: wcd9335: clarify return value

cppcheck warning:

sound/soc/codecs/wcd9335.c:5216:9: warning: Identical condition and
return expression 'ret', return value is always 0
[identicalConditionAfterEarlyExit]
 return ret;
        ^
sound/soc/codecs/wcd9335.c:5211:6: note: If condition 'ret' is true,
the function will return/exit
 if (ret)
     ^
sound/soc/codecs/wcd9335.c:5216:9: note: Returning identical
expression 'ret'
 return ret;
        ^

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/20210218222916.89809-9-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>