ASoC: rt5682s: simplify the return of rt5682s_probe()

After commit bfc5e8b8 ("ASoC: rt5682s: Reduce coupling of
Micbias and Vref2 settings"), the return of rt5682s_probe()
can be simplified. No functional changed.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220920151413.3455255-1-yangyingliang@huawei.com


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