drm/xe/device: clean up on error in probe()

drm/xe/device: clean up on error in probe()

This error path should clean up before returning.

Smatch detected this bug:
  drivers/gpu/drm/xe/xe_device.c:487 xe_device_probe() warn: missing unwind goto?

Fixes: 4cb12b71923b ("drm/xe/xe2: Determine bios enablement for flat ccs on igfx")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>