Bluetooth: Mesh: Use default provisioning protocol timeout in RPR Client

The timeout used upon opening the link with the server relates to the
PB-Remote Link Open procedure, but not to the whole provisioning
procedure. For the provisioning procedure, the timeout should be at
least 60 seconds as explained in section 5.4.4.

Signed-off-by: Pavel Vasilyev <[email protected]>

Author: PavelVPV

subsys/bluetooth/mesh/prov_bearer.h

@@ -4,7 +4,11 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-#define PROTOCOL_TIMEOUT     K_SECONDS(60)
+/** Provisioning protocol timeout in seconds. */
+#define PROTOCOL_TIMEOUT_SEC  60
+
+/** Provisioning protocol timeout. */
+#define PROTOCOL_TIMEOUT     K_SECONDS(PROTOCOL_TIMEOUT_SEC)
 
 /** @def PROV_BEARER_BUF_HEADROOM
  *

subsys/bluetooth/mesh/rpr_cli.c

@@ -59,6 +59,11 @@ static void link_report(struct bt_mesh_rpr_cli *cli,
 		bearer.link = BEARER_LINK_OPENED;
 		LOG_DBG("Opened");
 		bearer.cb->link_opened(&pb_remote_cli, &ctx);
+
+		/* PB-Remote Open Link procedure timeout is configurable, but the provisioning
+		 * protocol timeout is not. Use default provisioning protocol timeout.
+		 */
+		cli->link.time = PROTOCOL_TIMEOUT_SEC;
 		return;
 	}