ASoC: soc-core: cleanup cppcheck warning at snd_soc_of_parse_audio_simple_widgets()

This patch cleanups below cppcheck warning.

sound/soc/soc-core.c:2777:25: style: The scope of the variable 'ret' can be reduced. [variableScope]
 int i, j, num_widgets, ret;
                        ^
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87pmv1yl6b.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-core.c

@@ -2773,7 +2773,7 @@ int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
 	struct device_node *np = card->dev->of_node;
 	struct snd_soc_dapm_widget *widgets;
 	const char *template, *wname;
-	int i, j, num_widgets, ret;
+	int i, j, num_widgets;
 
 	num_widgets = of_property_count_strings(np, propname);
 	if (num_widgets < 0) {
@@ -2803,8 +2803,8 @@ int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
 	}
 
 	for (i = 0; i < num_widgets; i++) {
-		ret = of_property_read_string_index(np, propname,
-			2 * i, &template);
+		int ret = of_property_read_string_index(np, propname,
+							2 * i, &template);
 		if (ret) {
 			dev_err(card->dev,
 				"ASoC: Property '%s' index %d read error:%d\n",