power_supply: lp8788-charger: Fix leaked power supply on probe fail

power_supply: lp8788-charger: Fix leaked power supply on probe fail

[ Upstream commit a7117f81e8391e035c49b3440792f7e6cea28173 ]

Driver forgot to unregister charger power supply if registering of
battery supply failed in probe(). In such case the memory associated
with power supply leaked.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Fixes: 98a276649358 ("power_supply: Add new lp8788 charger driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>