msm: camera: Fix for Possible information leak issue

Fix for possible information leak issue because of unintialised variable
Which can be accesed from userspace in camera fd driver

Signed-off-by: annamraj <annamraj@codeaurora.org>
Change-Id: I4552c4829e9532d848e46fd123316b26105e310e
Signed-off-by: Mounika Reddy Tangirala <mtangi@codeaurora.org>