ASoC: SOF: sof-audio: don't squelch errors in WIDGET_SETUP phase

When an IPC error happens while setting-up a widget during the FE
hw_params phase, the existing logic will unwind all previous
configurations but will overwrite the return status. The ALSA/ASoC
logic will then proceed with the prepare and trigger phases, even
though the firmware resources are not available.

Fix by returning the initial error code and ignoring the code returned
in the UNPREPARE phase.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Chao Song <chao.song@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230307114659.4614-1-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/sof-audio.c

@@ -610,8 +610,8 @@ int sof_widget_list_setup(struct snd_sof_dev *sdev, struct snd_sof_pcm *spcm,
 	ret = sof_walk_widgets_in_order(sdev, spcm, fe_params, platform_params,
 					dir, SOF_WIDGET_SETUP);
 	if (ret < 0) {
-		ret = sof_walk_widgets_in_order(sdev, spcm, fe_params, platform_params,
-						dir, SOF_WIDGET_UNPREPARE);
+		sof_walk_widgets_in_order(sdev, spcm, fe_params, platform_params,
+					  dir, SOF_WIDGET_UNPREPARE);
 		return ret;
 	}