msm: ipa: change release producer RM API to always return success

A bug fix in RM, which caused the producer to remain in
"release in progress" state when releasing producer.
The fix is to move to release state directly without
moving to "release in progress" state.

Change-Id: I588780898b7b234bbc3233f661f7bb90e34ce598
Signed-off-by: Vladislav Mordohovich <vmordoho@codeaurora.org>