memory: atmel-ebi: Fix missing of_node_put in atmel_ebi_probe

BugLink: https://bugs.launchpad.net/bugs/1969857
[ Upstream commit 6f296a9665ba5ac68937bf11f96214eb9de81baa ]

The device_node pointer is returned by of_parse_phandle() with refcount
incremented. We should use of_node_put() on it when done.

Fixes: 87108dc78eb8 ("memory: atmel-ebi: Enable the SMC clock if specified")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220309110144.22412-1-linmq006@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

diff --git a/drivers/memory/atmel-ebi.c b/drivers/memory/atmel-ebi.c
index c267283b01fdaf74c2ef094926fd65da72af0ca5..e749dcb3ddea93335a6ca5f5dd6e1de0e9a52418 100644 (file)
--- a/drivers/memory/atmel-ebi.c
+++ b/drivers/memory/atmel-ebi.c
@@ -544,20 +544,27 @@ static int atmel_ebi_probe(struct platform_device *pdev)
        smc_np = of_parse_phandle(dev->of_node, "atmel,smc", 0);
 
        ebi->smc.regmap = syscon_node_to_regmap(smc_np);
-       if (IS_ERR(ebi->smc.regmap))
-               return PTR_ERR(ebi->smc.regmap);
+       if (IS_ERR(ebi->smc.regmap)) {
+               ret = PTR_ERR(ebi->smc.regmap);
+               goto put_node;
+       }
 
        ebi->smc.layout = atmel_hsmc_get_reg_layout(smc_np);
-       if (IS_ERR(ebi->smc.layout))
-               return PTR_ERR(ebi->smc.layout);
+       if (IS_ERR(ebi->smc.layout)) {
+               ret = PTR_ERR(ebi->smc.layout);
+               goto put_node;
+       }
 
        ebi->smc.clk = of_clk_get(smc_np, 0);
        if (IS_ERR(ebi->smc.clk)) {
-               if (PTR_ERR(ebi->smc.clk) != -ENOENT)
-                       return PTR_ERR(ebi->smc.clk);
+               if (PTR_ERR(ebi->smc.clk) != -ENOENT) {
+                       ret = PTR_ERR(ebi->smc.clk);
+                       goto put_node;
+               }
 
                ebi->smc.clk = NULL;
        }
+       of_node_put(smc_np);
        ret = clk_prepare_enable(ebi->smc.clk);
        if (ret)
                return ret;
@@ -608,6 +615,10 @@ static int atmel_ebi_probe(struct platform_device *pdev)
        }
 
        return of_platform_populate(np, NULL, NULL, dev);
+
+put_node:
+       of_node_put(smc_np);
+       return ret;
 }
 
 static __maybe_unused int atmel_ebi_resume(struct device *dev)