Do not call power_supply_powers() if power_supply_register() failed
earlier. This fixes possible NULL pointer dereference by
power_supply_powers() in such case.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NJiri Kosina <jkosina@suse.cz>
Signed-off-by: NSebastian Reichel <sre@kernel.org>