drm/msm/shd: Avoids printing uninitialized variable in log

In the function shd_drm_obj_init, 'i' is printed in the
logs which is an uninitialized variable. This patch avoids
using uninitialized variable 'uint32_t i' in the error
logs.

Change-Id: Ib281671bc15ab47feb7019835c62804d3c984f76
Signed-off-by: Rahul Sharma <rahsha@codeaurora.org>