soc: qcom: wda: fix ssr cleanup

Fixed an issue that the rmnet powersave work was not cleanup due to
access of an unassigned flag value when ssr is notified through netmgr.
The partial cleanup could cause access of invalid address when the work
runs again.

CRs-fixed: 2366892
Change-Id: I3c10f8d93aa8a3f58a03749f1682e0a6d6f25abe
Acked-by: Weiyi Chen <weiyic@qti.qualcomm.com>
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>