msm: camera: lrme: Fix Stack Overflow condition in lrme hw manager

Add error check for condition where array index is equal to the max
permissible io buffers for lrme which causes stack overflow.

Change-Id: Ifdf71516e5b8c269edca9965588d7e4fa0d940ff
Signed-off-by: Mukund Madhusudan Atre <matre@codeaurora.org>