ASoC: SOF: core: Move probe work related code under a single if () branch

ASoC: SOF: core: Move probe work related code under a single if () branch

Relocate the INIT_WORK() at the same place where we schedule the work to
make the code simpler and easier to follow.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210916124902.24248-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>