driver core: Fix error return code in really_probe()

In the case of error handling, the error code returned by the subfunction
should be propagated instead of 0.

Fixes: 1901fb26 ("Driver core: fix "driver" symlink timing")
Fixes: 23b69044 ("driver core: add dev_groups to all drivers")
Fixes: 8fd456ec ("driver core: Add state_synced sysfs file for devices that support it")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20210707074301.2722-1-thunder.leizhen@huawei.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>