rdp: Fix invalid free and memory leak on error

Peer context creation's error handling labels must be swapped to avoid
an invalid free when nsc context creation fails and a leak of the rfx
context when encode stream creation fails.

Signed-off-by: Loïc Molinari <loic.molinari@collabora.com>

libweston/backend-rdp/rdp.c

@@ -765,10 +765,10 @@ rdp_peer_context_new(freerdp_peer* client, RdpPeerContext* context)
 
 	return TRUE;
 
-out_error_nsc:
-	rfx_context_free(context->rfx_context);
 out_error_stream:
 	nsc_context_free(context->nsc_context);
+out_error_nsc:
+	rfx_context_free(context->rfx_context);
 	return FALSE;
 }