fix linked_list_allocator mutex usage

1 files changed, 3 insertions, 2 deletions

diff --git a/arch/x86_64/src/memory/heap/linked_list_allocator.cpp b/arch/x86_64/src/memory/heap/linked_list_allocator.cpp
index 01838f9..1c5c443 100644
--- a/arch/x86_64/src/memory/heap/linked_list_allocator.cpp
+++ b/arch/x86_64/src/memory/heap/linked_list_allocator.cpp
@@ -36,14 +36,15 @@ namespace teachos::arch::memory::heap
     {
       if (current->size >= size + min_allocatable_size())
       {
-        return split_free_memory_block(previous, current, size);
+        auto memory_address = split_free_memory_block(previous, current, size);
+        mutex.unlock();
+        return memory_address;
       }
 
       previous = current;
       current = current->next;
     }
 
-    mutex.unlock();
     exception_handling::panic("[Linked List Allocator] Out of memory");
   }