sdfw_services: Allow rpc_init to fail in ssf_client init

Allow nrf_rpc_init to fail duing the ssf_client initialization.
This call will try to initialize all transports, since we initialize
ssf_client early during the boot some other IPC transports might
fail to initialize. This is not an issue since it the other transports
can get initialized later in the boot process.

The change here checks that only the relevant transport has been
initialized.

Signed-off-by: Georgios Vasilakis <[email protected]>

subsys/sdfw_services/transport/nrf_rpc/ssf_client_nrf_rpc.c

@@ -52,17 +52,19 @@ static void err_handler(const struct nrf_rpc_err_report *report)
 
 int ssf_client_transport_init(ssf_client_transport_notif_handler handler)
 {
-	int err;
-
 	if (handler == NULL) {
 		return -SSF_EINVAL;
 	}
 	notif_handler = handler;
 
 	transport_initialized = false;
 
-	err = nrf_rpc_init(err_handler);
-	if (err != 0) {
+	/* We ignore the nrf_rpc_init on purpose here, the nrf_rpc_init
+	 * will try to initialize all the transports/groups, but we only
+	 * want to check that the ssf_group is initialized.
+	 */
+	nrf_rpc_init(err_handler);
+	if (!NRF_RPC_GROUP_STATUS(ssf_group)) {
 		return -SSF_EINVAL;
 	}