ASoC: soc-core: don't use for_each_card_links_safe() at snd_soc_find_dai_link()

It doesn't removes list during loop at snd_soc_find_dai_link().
We don't need to use _safe loop.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87imr9ahp9.wl-kuninori.morimoto.gx@renesas.com
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>