phy: stm32: fix error return in stm32_usbphyc_phy_init

[ Upstream commit 32b378a ]

Error code is overridden, in case the PLL doesn't lock. So, the USB
initialization can continue. This leads to a platform freeze.
This can be avoided by returning proper error code to avoid USB probe
freezing the platform. It also displays proper errors in log.

Fixes: 5b1af71 ("phy: stm32: rework PLL Lock detection")
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20220713133953.595134-1-fabrice.gasnier@foss.st.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/phy/st/phy-stm32-usbphyc.c

@@ -279,7 +279,9 @@ static int stm32_usbphyc_phy_init(struct phy *phy)
 	return 0;
 
 pll_disable:
-	return stm32_usbphyc_pll_disable(usbphyc);
+	stm32_usbphyc_pll_disable(usbphyc);
+
+	return ret;
 }
 
 static int stm32_usbphyc_phy_exit(struct phy *phy)