ASoC: Intel: Skylake: skl-topology: remove redundant assignments

Cppcheck complains about possible NULL pointer dereferences but the
assignments are actually not needed before walking through lists.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200813200147.61990-20-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/skylake/skl-topology.c

@@ -550,8 +550,8 @@ static int skl_tplg_unload_pipe_modules(struct skl_dev *skl,
 	 struct skl_pipe *pipe)
 {
 	int ret = 0;
-	struct skl_pipe_module *w_module = NULL;
-	struct skl_module_cfg *mconfig = NULL;
+	struct skl_pipe_module *w_module;
+	struct skl_module_cfg *mconfig;
 
 	list_for_each_entry(w_module, &pipe->w_list, node) {
 		guid_t *uuid_mod;
@@ -1893,7 +1893,7 @@ static int skl_tplg_be_set_src_pipe_params(struct snd_soc_dai *dai,
 static int skl_tplg_be_set_sink_pipe_params(struct snd_soc_dai *dai,
 	struct snd_soc_dapm_widget *w, struct skl_pipe_params *params)
 {
-	struct snd_soc_dapm_path *p = NULL;
+	struct snd_soc_dapm_path *p;
 	int ret = -EIO;
 
 	snd_soc_dapm_widget_for_each_sink_path(w, p) {