soc: aspeed-lpc-ctrl: Fix clock cleanup in error path

Move syscon_regmap_lookup_by_compatible() above the
devm_clk_get() to avoid missing clk_disable_unprepare().

Fixes: 2f9b25fa6682 ("soc: aspeed: Re-enable FWH2AHB on AST2600")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20210824085522.1849410-1-yangyingliang@huawei.com
Link: https://lore.kernel.org/r/20210825001214.3056193-1-joel@jms.id.au'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/drivers/soc/aspeed/aspeed-lpc-ctrl.c b/drivers/soc/aspeed/aspeed-lpc-ctrl.c
index 6893c5e..72771e0 100644 (file)
--- a/drivers/soc/aspeed/aspeed-lpc-ctrl.c
+++ b/drivers/soc/aspeed/aspeed-lpc-ctrl.c
@@ -295,6 +295,16 @@ static int aspeed_lpc_ctrl_probe(struct platform_device *pdev)
                return -ENODEV;
        }
 
+       if (of_device_is_compatible(dev->of_node, "aspeed,ast2600-lpc-ctrl")) {
+               lpc_ctrl->fwh2ahb = true;
+
+               lpc_ctrl->scu = syscon_regmap_lookup_by_compatible("aspeed,ast2600-scu");
+               if (IS_ERR(lpc_ctrl->scu)) {
+                       dev_err(dev, "couldn't find scu\n");
+                       return PTR_ERR(lpc_ctrl->scu);
+               }
+       }
+
        lpc_ctrl->clk = devm_clk_get(dev, NULL);
        if (IS_ERR(lpc_ctrl->clk)) {
                dev_err(dev, "couldn't get clock\n");
@@ -306,16 +316,6 @@ static int aspeed_lpc_ctrl_probe(struct platform_device *pdev)
                return rc;
        }
 
-       if (of_device_is_compatible(dev->of_node, "aspeed,ast2600-lpc-ctrl")) {
-               lpc_ctrl->fwh2ahb = true;
-
-               lpc_ctrl->scu = syscon_regmap_lookup_by_compatible("aspeed,ast2600-scu");
-               if (IS_ERR(lpc_ctrl->scu)) {
-                       dev_err(dev, "couldn't find scu\n");
-                       return PTR_ERR(lpc_ctrl->scu);
-               }
-       }
-
        lpc_ctrl->miscdev.minor = MISC_DYNAMIC_MINOR;
        lpc_ctrl->miscdev.name = DEVICE_NAME;
        lpc_ctrl->miscdev.fops = &aspeed_lpc_ctrl_fops;