drm/xe/vm: move rebind_work init earlier

In xe_vm_close_and_put() we need to be able to call
flush_work(rebind_work), however during vm creation we can call this on
the error path, before having actually set up the worker, leading to a
splat from flush_work().

It looks like we can simply move the worker init step earlier to fix
this.

Fixes: dd08ebf ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: <stable@vger.kernel.org> # v6.8+
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250514152424.149591-3-matthew.auld@intel.com

Author: matt-auld

drivers/gpu/drm/xe/xe_vm.c

@@ -1704,8 +1704,10 @@ struct xe_vm *xe_vm_create(struct xe_device *xe, u32 flags)
 	 * scheduler drops all the references of it, hence protecting the VM
 	 * for this case is necessary.
 	 */
-	if (flags & XE_VM_FLAG_LR_MODE)
+	if (flags & XE_VM_FLAG_LR_MODE) {
+		INIT_WORK(&vm->preempt.rebind_work, preempt_rebind_work_func);
 		xe_pm_runtime_get_noresume(xe);
+	}
 
 	vm_resv_obj = drm_gpuvm_resv_object_alloc(&xe->drm);
 	if (!vm_resv_obj) {
@@ -1750,10 +1752,8 @@ struct xe_vm *xe_vm_create(struct xe_device *xe, u32 flags)
 		vm->batch_invalidate_tlb = true;
 	}
 
-	if (vm->flags & XE_VM_FLAG_LR_MODE) {
-		INIT_WORK(&vm->preempt.rebind_work, preempt_rebind_work_func);
+	if (vm->flags & XE_VM_FLAG_LR_MODE)
 		vm->batch_invalidate_tlb = false;
-	}
 
 	/* Fill pt_root after allocating scratch tables */
 	for_each_tile(tile, xe, id) {