cli: fix a crash on "nmcli d wifi hotspot"

Call the correct _finish() function for
nm_client_add_and_activate_connection_async(). add_and_activate_cb()
somewhat confusingly alternates between two different ones depending on
whether info->create is set.

Fixes: 3593237527 ('cli: reuse connections in nmcli dev wifi con')
https://github.com/NetworkManager/NetworkManager/pull/326

clients/cli/devices.c

@@ -3888,6 +3888,7 @@ do_device_wifi_hotspot (NmCli *nmc, int argc, char **argv)
 	info->nmc = nmc;
 	info->device = device;
 	info->hotspot = TRUE;
+	info->create = TRUE;
 
 	nm_client_add_and_activate_connection_async (nmc->client,
 	                                             connection,