simulation: move list_lock initialization to init()

Signed-off-by: Manohar Vanga <manohar.vanga@cern.ch>

simulation/fake_wb_bus.c

@@ -49,8 +49,6 @@ static int fake_wbbus_probe(struct device *dev)
 	struct wb_device *wbdev, *next;
 	const struct firmware *wb_fw;
 
-	mutex_init(&list_lock);
-
 	/*
 	 * load firmware with wishbone address map. In the real driver,
 	 * we would first load the bitstream into the fpga and then read
@@ -135,6 +133,8 @@ static int __init fake_wb_bus_init(void)
 {
 	int ret;
 
+	mutex_init(&list_lock);
+
 	ret = device_register(&fake_wbbus_device);
 	if (ret) {
 		pr_err(KBUILD_MODNAME "failed to register fake"