[PATCH 4.19 76/92] net: qcom/emac: add missed clk_disable_unprepare in error path of emac_clks_phase1_init

[Greg Kroah-Hartman]

From: Wang Hai <wanghai38@xxxxxxxxxx>

[ Upstream commit 50caa777a3a24d7027748e96265728ce748b41ef ]

Fix the missing clk_disable_unprepare() before return
from emac_clks_phase1_init() in the error handling case.

Fixes: b9b17debc69d ("net: emac: emac gigabit ethernet controller driver")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Wang Hai <wanghai38@xxxxxxxxxx>
Acked-by: Timur Tabi <timur@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/ethernet/qualcomm/emac/emac.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c
index 2a0cbc535a2ed..19673ed929e68 100644
--- a/drivers/net/ethernet/qualcomm/emac/emac.c
+++ b/drivers/net/ethernet/qualcomm/emac/emac.c
@@ -493,13 +493,24 @@ static int emac_clks_phase1_init(struct platform_device *pdev,
 
 	ret = clk_prepare_enable(adpt->clk[EMAC_CLK_CFG_AHB]);
 	if (ret)
-		return ret;
+		goto disable_clk_axi;
 
 	ret = clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 19200000);
 	if (ret)
-		return ret;
+		goto disable_clk_cfg_ahb;
+
+	ret = clk_prepare_enable(adpt->clk[EMAC_CLK_HIGH_SPEED]);
+	if (ret)
+		goto disable_clk_cfg_ahb;
 
-	return clk_prepare_enable(adpt->clk[EMAC_CLK_HIGH_SPEED]);
+	return 0;
+
+disable_clk_cfg_ahb:
+	clk_disable_unprepare(adpt->clk[EMAC_CLK_CFG_AHB]);
+disable_clk_axi:
+	clk_disable_unprepare(adpt->clk[EMAC_CLK_AXI]);
+
+	return ret;
 }
 
 /* Enable clocks; needs emac_clks_phase1_init to be called before */
-- 
2.25.1