ASoC: mediatek: mt8188: Remove unnecessary variable assignments

In the function mtk_dai_hdmitx_dptx_hw_params, the variable
'ret' is redundant, thus remove it.

Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Link: https://patch.msgid.link/20241010073547.3720-1-tangbin@cmss.chinamobile.com


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