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André Draszik f3737fc3b8 pmdomain: samsung: plug potential memleak during probe

[ Upstream commit 90c82941ad ]

of_genpd_add_provider_simple() could fail, in which case this code
leaks the domain name, pd->pd.name.

Use devm_kstrdup_const() to plug this leak. As a side-effect, we can
simplify existing error handling.

Fixes: c09a3e6c97 ("soc: samsung: pm_domains: Convert to regular platform driver")
Cc: stable@vger.kernel.org
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: André Draszik <andre.draszik@linaro.org>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
[ drivers/pmdomain/samsung/exynos-pm-domains.c -> drivers/soc/samsung/pm_domains.c ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>