clk: qcom: clk-rpmh: Remove redundant if statement

By the clk framework already reference counts prepare/unprepare,
this if statement should be never true.

Signed-off-by: Li Zhengyu <lizhengyu3@huawei.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20220613063327.89320-1-lizhengyu3@huawei.com


Signed-off-by: Bjorn Andersson <andersson@kernel.org>