ASoC: amd: vangogh: fix uninitialized symbol warning in machine driver

Fixed below smatch static checker warning.
sound/soc/amd/vangogh/acp5x-mach.c:190 acp5x_cs35l41_hw_params()
error: uninitialized symbol 'ret'.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20220225193054.24916-4-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>