drm/msm/gpu: Fix check for devices without devfreq

Looks like 658f4c82 ("drm/msm/devfreq: Add 1ms delay before
clamping freq") was badly rebased on top of efb8a170 ("drm/msm:
Fix devfreq NULL pointer dereference on a3xx") and ended up with
the NULL check in the wrong place.

Fixes: 658f4c82 ("drm/msm/devfreq: Add 1ms delay before clamping freq")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Link: https://lore.kernel.org/r/20211120200103.1051459-2-robdclark@gmail.comSigned-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/msm_gpu_devfreq.c

@@ -208,9 +208,6 @@ static void msm_devfreq_idle_work(struct kthread_work *work)
 	struct msm_gpu *gpu = container_of(df, struct msm_gpu, devfreq);
 	unsigned long idle_freq, target_freq = 0;
 
-	if (!df->devfreq)
-		return;
-
 	/*
 	 * Hold devfreq lock to synchronize with get_dev_status()/
 	 * target() callbacks
@@ -232,6 +229,9 @@ void msm_devfreq_idle(struct msm_gpu *gpu)
 {
 	struct msm_gpu_devfreq *df = &gpu->devfreq;
 
+	if (!df->devfreq)
+		return;
+
 	msm_hrtimer_queue_work(&df->idle_work, ms_to_ktime(1),
 			       HRTIMER_MODE_REL);
 }