ASoC: Intel: Skylake: Fix to fail safely if module not available in path

If a module is not available in a pipeline, fail safely rather than
causing oops.

Signed-off-by: G Kranthi <gudishax.kranthikumar@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>