ASoC: amd: acp: add a label to make error path more clean

Move platform_device_unregister() to a new label to make code more clean.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220819073758.1273160-3-yangyingliang@huawei.com


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