linux-phytec-ti

ARM: EXYNOS: Handle of of_iomap() failure

Prevent possible NULL pointer dereference if of_iomap() fails.
Handle the error by skipping such power domain.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>