drm/msm/sde: access sde fence before fence release

fence_put will release the fence memory in error
condition. It should access "sde_fence->name" before
releasing the fence.

Change-Id: I64515346eb905143828336bdb2a1f942ffdcc120
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>