serial-port: ensure we close the port when forcing to close it

src/mm-serial-port.c

@@ -1069,10 +1069,6 @@ mm_serial_port_close_force (MMSerialPort *self)
     mm_info ("(%s) forced to close port",
              mm_port_get_device (MM_PORT (self)));
 
-    /* Mark as having forced the close, so that we don't warn about incorrect
-     * open counts */
-    priv->forced_close = TRUE;
-
     /* If already closed, done */
     if (!priv->open_count)
         return;
@@ -1080,6 +1076,10 @@ mm_serial_port_close_force (MMSerialPort *self)
     /* Force the port to close */
     priv->open_count = 1;
     mm_serial_port_close (self);
+
+    /* Mark as having forced the close, so that we don't warn about incorrect
+     * open counts */
+    priv->forced_close = TRUE;
 }
 
 static void