qfile-daemon-dvm: Move dispVM killing into cleanup function

dispvm/qfile-daemon-dvm

@@ -150,7 +150,7 @@ class QfileDaemonDvm:
         return self.do_get_dvm()
 
     @staticmethod
-    def remove_disposable_from_qdb(name):
+    def finish_disposable(name):
         qvm_collection = QubesVmCollection()
         qvm_collection.lock_db_for_writing()
         qvm_collection.load()
@@ -158,6 +158,12 @@ class QfileDaemonDvm:
         if vm is None:
             qvm_collection.unlock_db()
             return False
+
+        try:
+            vm.force_shutdown()
+        except QubesException:
+            # VM already destroyed
+            pass
         qvm_collection.pop(vm.qid)
         qvm_collection.save()
         qvm_collection.unlock_db()
@@ -181,11 +187,6 @@ def main():
         subprocess.call(['/usr/lib/qubes/qrexec-client', '-d', dispvm.name,
                          user+':exec /usr/lib/qubes/qubes-rpc-multiplexer ' +
                          exec_index + " " + src_vmname])
-        try:
-            dispvm.force_shutdown()
-        except QubesException:
-            # VM already destroyed
-            pass
-        qfile.remove_disposable_from_qdb(dispvm.name)
+        qfile.finish_disposable(dispvm.name)
 
 main()