msm: cpp: Dump the payload before timer is started

The frame is dumped after the time is started. This results in time out
and incorrect payload as dump routing takes more time. Dump the payload
before the timer is started.

Change-Id: Ibf4d57f367209a89a48e2437e83a63b41820ceda
Signed-off-by: Krishnankutty Kolathappilly <kkolatha@codeaurora.org>