drm/v3d: Plug dma_fence leak

raspberrypi inclusion
category: feature
bugzilla: 50432

--------------------------------

The irq_fence and done_fence are given a reference that is never
released. The necessary dma_fence_put()s seem to have been
deleted in error in an earlier commit.

Fixes: 0b73676836b2 ("drm/v3d: Clock V3D down when not in use.")
Signed-off-by: NPhil Elwell <phil@raspberrypi.org>
Signed-off-by: NFang Yafen <yafen@iscas.ac.cn>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/gpu/drm/v3d/v3d_gem.c

@@ -410,6 +410,9 @@ v3d_job_free(struct kref *ref)
 	}
 	xa_destroy(&job->deps);
 
+	dma_fence_put(job->irq_fence);
+	dma_fence_put(job->done_fence);
+
 	v3d_clock_up_put(v3d);
 
 	kfree(job);