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[ Upstream commitcbc7f3b4f6] The xe_preempt_fence_create() function returns error pointers. It never returns NULL. Update the error checking to match. Fixes:dd08ebf6c3("drm/xe: Introduce a new DRM driver for Intel GPUs") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Link: https://lore.kernel.org/r/aJTMBdX97cof_009@stanley.mountain Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> (cherry picked from commit75cc23ffe5) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>