ASoC: Intel: Atom: sst-atom-controls: remove redundant assignments

cppcheck complains of a possible NULL pointer dereference but setting
a pointer before using list_for_each_entry() is not useful.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200813200147.61990-2-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

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

@@ -299,7 +299,7 @@ static int sst_find_and_send_pipe_algo(struct sst_data *drv,
 {
 	int ret = 0;
 	struct sst_algo_control *bc;
-	struct sst_module *algo = NULL;
+	struct sst_module *algo;
 
 	dev_dbg(&drv->pdev->dev, "Enter: widget=%s\n", pipe);
 
@@ -602,7 +602,7 @@ static int sst_set_pipe_gain(struct sst_ids *ids,
 	int ret = 0;
 	struct sst_gain_mixer_control *mc;
 	struct sst_gain_value *gv;
-	struct sst_module *gain = NULL;
+	struct sst_module *gain;
 
 	list_for_each_entry(gain, &ids->gain_list, node) {
 		struct snd_kcontrol *kctl = gain->kctl;