ASoC: meson: remove useless initialization

cppcheck complains about invalid NULL dereferences but there's indeed
no need to initialize a loop variable.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20220520211719.607543-17-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/meson/meson-codec-glue.c

@@ -13,7 +13,7 @@
 static struct snd_soc_dapm_widget *
 meson_codec_glue_get_input(struct snd_soc_dapm_widget *w)
 {
-	struct snd_soc_dapm_path *p = NULL;
+	struct snd_soc_dapm_path *p;
 	struct snd_soc_dapm_widget *in;
 
 	snd_soc_dapm_widget_for_each_source_path(w, p) {