ASoC: atmel_ssc_dai: Remove the unneeded result variable

Return the value from asoc_ssc_init() directly instead of storing it
in another redundant variable.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Link: https://lore.kernel.org/r/20220823075335.209072-1-ye.xingchen@zte.com.cn


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