ASoC: codecs: cs42l42-sdw: clear stream

The API requires the stream info to be cleared when the argument is
NULL.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20230324014408.1677505-2-yung-chuan.liao@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/cs42l42-sdw.c

@@ -152,9 +152,6 @@ static int cs42l42_sdw_port_prep(struct sdw_slave *slave,
 static int cs42l42_sdw_dai_set_sdw_stream(struct snd_soc_dai *dai, void *sdw_stream,
 					  int direction)
 {
-	if (!sdw_stream)
-		return 0;
-
 	snd_soc_dai_dma_data_set(dai, direction, sdw_stream);
 
 	return 0;