Bluetooth: AMP: Factor out amp_ctrl_add

Add ctrl_id parameter to amp_ctrl_add since we always set it
after function ctrl is created.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
diff --git a/net/bluetooth/amp.c b/net/bluetooth/amp.c
index b6e1c3a..2fc5562 100644
--- a/net/bluetooth/amp.c
+++ b/net/bluetooth/amp.c
@@ -45,7 +45,7 @@
 	return kref_put(&ctrl->kref, &amp_ctrl_destroy);
 }
 
-struct amp_ctrl *amp_ctrl_add(struct amp_mgr *mgr)
+struct amp_ctrl *amp_ctrl_add(struct amp_mgr *mgr, u8 id)
 {
 	struct amp_ctrl *ctrl;
 
@@ -53,12 +53,13 @@
 	if (!ctrl)
 		return NULL;
 
+	kref_init(&ctrl->kref);
+	ctrl->id = id;
+
 	mutex_lock(&mgr->amp_ctrls_lock);
 	list_add(&ctrl->list, &mgr->amp_ctrls);
 	mutex_unlock(&mgr->amp_ctrls_lock);
 
-	kref_init(&ctrl->kref);
-
 	BT_DBG("mgr %p ctrl %p", mgr, ctrl);
 
 	return ctrl;