ASoC: soc-component: cleanup cppcheck warning at snd_soc_pcm_component_pm_runtime_get()

This patch cleanups below cppcheck warning.

sound/soc/soc-component.c:1183:9: style: The scope of the variable 'ret' can be reduced. [variableScope]
 int i, ret;
        ^

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


Signed-off-by: Mark Brown <broonie@kernel.org>