phy: stih41x-usb: Fixup stih41x_usb_phy_power_on failure path

If stih41x_usb_phy_power_on() fails, we need to call clk_disable_unprepare()
before return error. This is to ensure we have balanced clk_enable/disable
calls.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/phy/phy-stih41x-usb.c b/drivers/phy/phy-stih41x-usb.c
index a603801293ff..c093b472b57d 100644
--- a/drivers/phy/phy-stih41x-usb.c
+++ b/drivers/phy/phy-stih41x-usb.c
@@ -87,8 +87,12 @@ static int stih41x_usb_phy_power_on(struct phy *phy)
                 return ret;
         }
 
-        return regmap_update_bits(phy_dev->regmap, phy_dev->cfg->syscfg,
-                        phy_dev->cfg->oscok, phy_dev->cfg->oscok);
+        ret = regmap_update_bits(phy_dev->regmap, phy_dev->cfg->syscfg,
+                                 phy_dev->cfg->oscok, phy_dev->cfg->oscok);
+        if (ret)
+                clk_disable_unprepare(phy_dev->clk);
+
+        return ret;
 }
 
 static int stih41x_usb_phy_power_off(struct phy *phy)