diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
index 89ee37469d41..bc429365b72a 100644
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -79,11 +79,11 @@ static struct ldt_struct *alloc_ldt_struct(int size)
 
 	ret = kaiser_add_mapping((unsigned long)new_ldt->entries, alloc_size,
 				 __PAGE_KERNEL);
+	new_ldt->size = size;
 	if (ret) {
 		__free_ldt_struct(new_ldt);
 		return NULL;
 	}
-	new_ldt->size = size;
 	return new_ldt;
 }