drm/xe: Only dump PAT when xe_hw_engines_init_early fails

After discussion with Lucas De Marchi, it turns out that is the
specific caller requiring a dump. This allows us to cleanup
gt_init in a bit.

Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250619104858.418440-18-dev@lankhorst.se


Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>