ASoC: Intel: mrfld - remove unnecessary check for pointer

the 'platform' pointer in sst_map_modules_to_pipe() is deref in caller
function so we need to check for it in this function

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/sst-atom-controls.c

@@ -1351,7 +1351,7 @@ static int sst_map_modules_to_pipe(struct snd_soc_platform *platform)
 	int ret = 0;
 
 	list_for_each_entry(w, &platform->component.card->widgets, list) {
-		if (platform && is_sst_dapm_widget(w) && (w->priv)) {
+		if (is_sst_dapm_widget(w) && (w->priv)) {
 			struct sst_ids *ids = w->priv;
 
 			dev_dbg(platform->dev, "widget type=%d name=%s\n",