drm/msm: move fence allocation out of msm_gpu_submit()

Prep work for next patch.

Signed-off-by: Rob Clark <robdclark@gmail.com>
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index c902283..d61d98a 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -163,7 +163,7 @@
 		uint32_t *totaltime, uint32_t ncntrs, uint32_t *cntrs);
 
 void msm_gpu_retire(struct msm_gpu *gpu);
-int msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
+void msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
 		struct msm_file_private *ctx);
 
 int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,