ks_bridge: Ignore completion error when payload is non zero

Ignore the completion error and deliver the packet to client
if payload is non zero. This will help avoid missing data packets
on clients.

Change-Id: I27883b40048d9f3c5045f3af50f117adb140cba3
Signed-off-by: Vamsi Krishna <vskrishn@codeaurora.org>