ASoC: amd: fix for variable set but not used warning

Fix below kernel warning.
>>> sound/soc/amd/acp-es8336.c:200:13: warning: variable 'ret' set but
>>> not used [-Wunused-but-set-variable]

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20220707132613.3150931-3-Vijendar.Mukunda@amd.com


Signed-off-by: Mark Brown <broonie@kernel.org>