[PATCH] net: stmmac: dwmac-rk: fix error handling in rk_gmac_powerup()

[Alexey Khoroshilov]

If phy_power_on() fails in rk_gmac_powerup(), clocks are left enabled.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshi...@ispras.ru>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c 
b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 7b923362ee55..3b174eae77c1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -1342,8 +1342,10 @@ static int rk_gmac_powerup(struct rk_priv_data *bsp_priv)
        }
 
        ret = phy_power_on(bsp_priv, true);
-       if (ret)
+       if (ret) {
+               gmac_clk_enable(bsp_priv, false);
                return ret;
+       }
 
        pm_runtime_enable(dev);
        pm_runtime_get_sync(dev);
-- 
2.7.4