Release Connection on Error- Changing statement order

Signed-off-by: sk222 <skhanna428@gmail.com>

Author: sk222

lib/transaction.js

@@ -53,8 +53,8 @@ function mixinTransaction(Oracle, oracle) {
   Oracle.prototype.commit = function(connection, cb) {
     debug('Commit a transaction');
     connection.commit(function(err) {
-      if (err) return cb(err);
       connection.release(cb);
+      if (err) return cb(err);
     });
   };
 
@@ -66,8 +66,8 @@ function mixinTransaction(Oracle, oracle) {
   Oracle.prototype.rollback = function(connection, cb) {
     debug('Rollback a transaction');
     connection.rollback(function(err) {
-      if (err) return cb(err);
       connection.release(cb);
+      if (err) return cb(err);
     });
   };
 }