soc: swr-mstr: Reinit clk off signal before waiting

Reinit clk off signal before waiting to avoid false
positives because of the signal complete that happened
prior to the waiting.

Change-Id: I678fdc8589039d9f59e6590a4899309dad479181
Signed-off-by: Ramprasad Katkam <katkam@codeaurora.org>