drm/amdgpu: free resources on fence usage query

Free the resources if the fence needs to be ignored
during the ratio calculation
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NDavid M Nieto <david.nieto@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210513174539.27409-1-david.nieto@amd.com

drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c

@@ -669,11 +669,15 @@ void amdgpu_ctx_fence_time(struct amdgpu_ctx *ctx, struct amdgpu_ctx_entity *cen
 		if (!fence)
 			continue;
 		s_fence = to_drm_sched_fence(fence);
-		if (!dma_fence_is_signaled(&s_fence->scheduled))
+		if (!dma_fence_is_signaled(&s_fence->scheduled)) {
+			dma_fence_put(fence);
 			continue;
+		}
 		t1 = s_fence->scheduled.timestamp;
-		if (t1 >= now)
+		if (!ktime_before(t1, now)) {
+			dma_fence_put(fence);
 			continue;
+		}
 		if (dma_fence_is_signaled(&s_fence->finished) &&
 			s_fence->finished.timestamp < now)
 			*total += ktime_sub(s_fence->finished.timestamp, t1);