ASoC: Intel: Skylake: Fix to free resources for dsp_init failure

unmap mmio and free memory resources if dsp_init fails.

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Acked-By: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>