[ Upstream commit f6c90df8e7e33c3dc33d4d7471bc42c232b0510e ]

A future patch is going to change semantics of clk_register() so that
clk_hw::init is guaranteed to be NULL after a clk is registered. Avoid
referencing this member here so that we don't run into NULL pointer
exceptions.

Cc: Chunyan Zhang <zhang.chunyan@linaro.org>
Cc: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: NStephen Boyd <sboyd@kernel.org>
Link: https://lkml.kernel.org/r/20190731193517.237136-8-sboyd@kernel.orgAcked-by: NBaolin Wang <baolin.wang@linaro.org>
Acked-by: NChunyan Zhang <zhang.chunyan@linaro.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>