ASoC: codecs: aw88395: Simplify with cleanup.h

Allocate memory, which is being freed at end of the scope, with
scoped/cleanup.h to reduce number of error paths and make code a bit
simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20240701171917.596173-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>