drm/msm: check for equals 0 only

wait_for_completion_timeout() returns 0 on timeout and aleast 1 otherwise
so checking for < makes no sense here.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/dsi/dsi_host.c

@@ -1049,7 +1049,7 @@ static void dsi_wait4video_done(struct msm_dsi_host *msm_host)
 	ret = wait_for_completion_timeout(&msm_host->video_comp,
 			msecs_to_jiffies(70));
 
-	if (ret <= 0)
+	if (ret == 0)
 		DRM_DEV_ERROR(dev, "wait for video done timed out\n");
 
 	dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_VIDEO_DONE, 0);