msm: kgsl: Don't set device state to AWARE if GMU recover fails

Don't set device state to AWARE if GMU recover fails as GMU
start was not successful. Instead, restore device state to
state from which transition to AWARE was triggered.

Change-Id: I1e241ca0bbaced469b0505c1e9850a8ceab024b5
Signed-off-by: Deepak Kumar <dkumar@codeaurora.org>