ASoC: Intel: fix runtime pm imbalance on error

pm_runtime_get_sync() increments the runtime PM usage counter even the
call returns an error code. Thus a pairing decrement is needed on the
error handling path to keep the counter balanced.

Signed-off-by: Junjie Mao <junjie.mao@enight.me>
Signed-off-by: Mark Brown <broonie@kernel.org>