phy: rockchip: samsung-hdptx: Do no set rk_hdptx_phy->rate in case of errors

Ensure rk_hdptx_ropll_tmds_cmn_config() updates hdptx->rate only after
all the other operations have been successful.

Fixes: c4b09c56 ("phy: phy-rockchip-samsung-hdptx: Add clock provider support")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20250318-phy-sam-hdptx-bpc-v6-4-8cb1678e7663@collabora.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>