Return if Item Defaults exist (#14834)

diff --git a/erpnext/patches/v11_0/move_item_defaults_to_child_table_for_multicompany.py b/erpnext/patches/v11_0/move_item_defaults_to_child_table_for_multicompany.py
index 2b6a5cb..01f84a0 100644
--- a/erpnext/patches/v11_0/move_item_defaults_to_child_table_for_multicompany.py
+++ b/erpnext/patches/v11_0/move_item_defaults_to_child_table_for_multicompany.py
@@ -16,7 +16,9 @@
 
 	frappe.reload_doc('stock', 'doctype', 'item_default')
 	frappe.reload_doc('stock', 'doctype', 'item')
-	
+
+	if frappe.db.a_row_exists('Item Default'): return
+
 	companies = frappe.get_all("Company")
 	if len(companies) == 1:
 		try: