ASoC: topology: Consolidate and fix asoc_tplg_dapm_widget_*_create flow

There are a few soc_tplg_dapm_widget_*_create functions with similar
content, but slightly different flow, unify their flow and make sure
that we go to error handler and free memory in case of failure.

Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Acked-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>