ASoC: soc-topology: cleanup cppcheck warning at soc_tplg_dapm_widget_elems_load()

ASoC: soc-topology: cleanup cppcheck warning at soc_tplg_dapm_widget_elems_load()

This patch cleanups below cppcheck warning.

sound/soc/soc-topology.c:1599:35: style: The scope of the variable 'widget' can be reduced. [variableScope]
 struct snd_soc_tplg_dapm_widget *widget;
                                  ^
sound/soc/soc-topology.c:1600:6: style: The scope of the variable 'ret' can be reduced. [variableScope]
 int ret, count, i;
     ^

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87pmuwwfl7.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>