AC-6057: Fixed lock exception scenario

Author: nishant04412

app/code/Magento/Quote/Model/QuoteManagement.php

@@ -633,6 +633,7 @@ protected function submitQuote(QuoteEntity $quote, $orderData = [])
             $this->quoteRepository->save($quote);
             $this->lockManager->unlock($lockedName);
         } catch (\Exception $e) {
+            $this->lockManager->unlock($lockedName);
             $this->rollbackAddresses($quote, $order, $e);
             throw $e;
         }