phy: ti-pipe3: remove set but unused variable

ti_pipe3_power_on() sets variable 'ret' but never uses it, so remove it.

drivers/phy/ti/phy-ti-pipe3.c:340:6: warning: variable ‘ret’ set but not
used [-Wunused-but-set-variable]

Link: https://lore.kernel.org/r/20200629145010.122675-4-vkoul@kernel.orgSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/ti/phy-ti-pipe3.c

@@ -337,7 +337,6 @@ static int ti_pipe3_power_on(struct phy *x)
 {
 	u32 val;
 	u32 mask;
-	int ret;
 	unsigned long rate;
 	struct ti_pipe3 *phy = phy_get_drvdata(x);
 	bool rx_pending = false;
@@ -355,8 +354,8 @@ static int ti_pipe3_power_on(struct phy *x)
 	rate = rate / 1000000;
 	mask = OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_FREQ_MASK;
 	val = rate << OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_FREQ_SHIFT;
-	ret = regmap_update_bits(phy->phy_power_syscon, phy->power_reg,
-				 mask, val);
+	regmap_update_bits(phy->phy_power_syscon, phy->power_reg,
+			   mask, val);
 	/*
 	 * For PCIe, TX and RX must be powered on simultaneously.
 	 * For USB and SATA, TX must be powered on before RX