Driver in its update status callback stores Soundwire device status in
state container but it never uses it later.  Simplify the code a bit.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com
Link: https://lore.kernel.org/r/20230518072753.7361-3-krzysztof.kozlowski@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org