drm/tegra: hub: Fix dereference before check
[ Upstream commit 7cf77b273a8fc51e7de622fa6691abd4436a9a6b ] Reported-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NThierry Reding <treding@nvidia.com> Signed-off-by: NSasha Levin (Microsoft) <sashal@kernel.org>
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