ASoC: SOF: topology: remove always-true redundant test

Address cppcheck warning:

sound/soc/sof/topology.c:2322:6: style: Condition 'pcm' is always true
[knownConditionTrueFalse]
 if (pcm) {
     ^

sound/soc/sof/topology.c:2311:6: note: Assuming that condition '!pcm'
is not redundant
 if (!pcm)
     ^

sound/soc/sof/topology.c:2322:6: note: Condition 'pcm' is always true
 if (pcm) {
     ^
Signed-off-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191011164312.7988-4-pierre-louis.bossart@linux.intel.comSigned-off-by: NMark Brown <broonie@kernel.org>

sound/soc/sof/topology.c

@@ -2308,10 +2308,9 @@ static int sof_dai_load(struct snd_soc_component *scomp, int index,
 	spcm->stream[SNDRV_PCM_STREAM_PLAYBACK].comp_id = COMP_ID_UNASSIGNED;
 	spcm->stream[SNDRV_PCM_STREAM_CAPTURE].comp_id = COMP_ID_UNASSIGNED;
 
-	if (pcm) {
-		spcm->pcm = *pcm;
-		dev_dbg(sdev->dev, "tplg: load pcm %s\n", pcm->dai_name);
-	}
+	spcm->pcm = *pcm;
+	dev_dbg(sdev->dev, "tplg: load pcm %s\n", pcm->dai_name);
+
 	dai_drv->dobj.private = spcm;
 	list_add(&spcm->list, &sdev->pcm_list);