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

This patch cleanups below cppcheck warning.

sound/soc/soc-core.c:3056:11: style: The scope of the variable 'i' can be reduced. [variableScope]
 int ret, i;
          ^
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87tukdyl6p.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-core.c

@@ -3054,7 +3054,7 @@ EXPORT_SYMBOL_GPL(snd_soc_daifmt_clock_provider_from_bitmap);
 unsigned int snd_soc_daifmt_parse_format(struct device_node *np,
 					 const char *prefix)
 {
-	int ret, i;
+	int ret;
 	char prop[128];
 	unsigned int format = 0;
 	int bit, frame;
@@ -3088,6 +3088,8 @@ unsigned int snd_soc_daifmt_parse_format(struct device_node *np,
 		ret = of_property_read_string(np, prop, &str);
 	}
 	if (ret == 0) {
+		int i;
+
 		for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
 			if (strcmp(str, of_fmt_table[i].name) == 0) {
 				format |= of_fmt_table[i].val;