ASoC: soc-ops: cleanup cppcheck warning at snd_soc_get_xr_sx()

This patch cleanups below cppcheck warning.

sound/soc/soc-ops.c:814:15: style: The scope of the variable 'regval' can be reduced. [variableScope]
 unsigned int regval;
              ^
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/871r7bw29k.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-ops.c

@@ -812,11 +812,10 @@ int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
 	long min = mc->min;
 	long max = mc->max;
 	long val = 0;
-	unsigned int regval;
 	unsigned int i;
 
 	for (i = 0; i < regcount; i++) {
-		regval = snd_soc_component_read(component, regbase+i);
+		unsigned int regval = snd_soc_component_read(component, regbase+i);
 		val |= (regval & regwmask) << (regwshift*(regcount-i-1));
 	}
 	val &= mask;