regulator: core: use kfree_const() to free space conditionally

regulator: core: use kfree_const() to free space conditionally

[ Upstream commit 40ddf997aade0c73ab9f6a176b79c39044749c4b ]

Use kfree_const() to free supply_name conditionally in create_regulator()
as supply_name may be allocated from kmalloc() or directly from .rodata
section.

Fixes: 494d2aba3c15 ("regulator: push allocations in create_regulator() outside of lock")
Signed-off-by: Wang ShaoBo <bobo.shaobowang@huawei.com>
Link: https://lore.kernel.org/r/20221123034616.3609537-1-bobo.shaobowang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>