regulator/core: regulator_register: set device->class earlier

[ Upstream commit 8adb4e647a83cb5928c05dae95b010224aea0705 ]

When fixing a memory leak in commit d3c731564e09 ("regulator: plug
of_node leak in regulator_register()'s error path") it moved the
device_initialize() call earlier, but did not move the `dev->class`
initialization.  The bug was spotted and fixed by reverting part of
the commit (in commit 5f4b204b6b81 "regulator: core: fix kobject
release warning and memory leak in regulator_register()") but
introducing a different bug: now early error paths use `kfree(dev)`
instead of `put_device()` for an already initialized `struct device`.

Move the missing assignments to just after `device_initialize()`.

Fixes: d3c731564e09 ("regulator: plug of_node leak in regulator_register()'s error path")
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Link: https://lore.kernel.org/r/b5b19cb458c40c9d02f3d5a7bd1ba7d97ba17279.1695077303.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 351f0fd..f6a95f7 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -5543,6 +5543,8 @@ regulator_register(struct device *dev,
                goto rinse;
        }
        device_initialize(&rdev->dev);
+       dev_set_drvdata(&rdev->dev, rdev);
+       rdev->dev.class = &regulator_class;
        spin_lock_init(&rdev->err_lock);
 
        /*
@@ -5604,11 +5606,9 @@ regulator_register(struct device *dev,
                rdev->supply_name = regulator_desc->supply_name;
 
        /* register with sysfs */
-       rdev->dev.class = &regulator_class;
        rdev->dev.parent = config->dev;
        dev_set_name(&rdev->dev, "regulator.%lu",
                    (unsigned long) atomic_inc_return(&regulator_no));
-       dev_set_drvdata(&rdev->dev, rdev);
 
        /* set regulator constraints */
        if (init_data)