ASoC: soc-dapm: cleanup cppcheck warning at snd_soc_dapm_del_route()

This patch cleanups below cppcheck warning.

sound/soc/soc-dapm.c:3007:30: style: The scope of the variable 'wsource' can be reduced. [variableScope]
 struct snd_soc_dapm_widget *wsource, *wsink;
                             ^
sound/soc/soc-dapm.c:3007:40: style: The scope of the variable 'wsink' can be reduced. [variableScope]
 struct snd_soc_dapm_widget *wsource, *wsink;
                                       ^
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87o8acu24f.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-dapm.c

@@ -3006,7 +3006,6 @@ static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
 				  const struct snd_soc_dapm_route *route)
 {
-	struct snd_soc_dapm_widget *wsource, *wsink;
 	struct snd_soc_dapm_path *path, *p;
 	const char *sink;
 	const char *source;
@@ -3044,8 +3043,8 @@ static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
 	}
 
 	if (path) {
-		wsource = path->source;
-		wsink = path->sink;
+		struct snd_soc_dapm_widget *wsource = path->source;
+		struct snd_soc_dapm_widget *wsink = path->sink;
 
 		dapm_mark_dirty(wsource, "Route removed");
 		dapm_mark_dirty(wsink, "Route removed");