drm/xe: Do not kill VM in PT code on -ENODATA

No need kill on -ENODATA as is this non-fatal error can occur when MMU
notifiers race with prefetches.

Fixes: 09ba0a8 ("drm/xe/svm: Implement prefetch support for SVM ranges")
Cc: stable@vger.kernel.org
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>>
Link: https://lore.kernel.org/r/20250613231808.752616-1-matthew.brost@intel.com

Author: mbrost05

drivers/gpu/drm/xe/xe_pt.c

@@ -2524,7 +2524,7 @@ xe_pt_update_ops_run(struct xe_tile *tile, struct xe_vma_ops *vops)
 	kfree(mfence);
 	kfree(ifence);
 kill_vm_tile1:
-	if (err != -EAGAIN && tile->id)
+	if (err != -EAGAIN && err != -ENODATA && tile->id)
 		xe_vm_kill(vops->vm, false);
 
 	return ERR_PTR(err);