phy: starfive: Correct the dphy configure process

We actually want to calculate the alignment values first, then
use the alignment value to look up the data from reg_configs[].

Fixes: d3ab7955 ("phy: starfive: Add mipi dphy tx support")
Reviewed-by: Shengyang Chen <shengyang.chen@starfivetech.com>
Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>
Link: https://lore.kernel.org/r/20240627020059.163535-1-changhuang.liang@starfivetech.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/starfive/phy-jh7110-dphy-tx.c

@@ -235,12 +235,14 @@ static int stf_dphy_configure(struct phy *phy, union phy_configure_opts *opts)
 	const struct stf_dphy_config *p = reg_configs;
 	unsigned long alignment  = STF_DPHY_BITRATE_ALIGN;
 	u32 bitrate = opts->mipi_dphy.hs_clk_rate;
-	u32 i = stf_dphy_get_config_index(bitrate);
 	u32 tmp;
+	u32 i;
 
 	if (bitrate % alignment)
 		bitrate += alignment - (bitrate % alignment);
 
+	i = stf_dphy_get_config_index(bitrate);
+
 	tmp = readl(dphy->topsys + STF_DPHY_APBIFSAIF_SYSCFG(100));
 	tmp &= ~STF_DPHY_REFCLK_IN_SEL;
 	tmp |= FIELD_PREP(STF_DPHY_REFCLK_IN_SEL, STF_DPHY_REFCLK_12M);