if_tsec: Free entire mbuf chain on failure

Reviewed by:	bz
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D57478

sys/dev/tsec/if_tsec.c

@@ -1321,7 +1321,7 @@ tsec_receive_intr_locked(struct tsec_softc *sc, int count)
 			    ~TSEC_RXBD_ZEROONINIT) | TSEC_RXBD_E | TSEC_RXBD_I;
 
 			if (sc->frame != NULL) {
-				m_free(sc->frame);
+				m_freem(sc->frame);
 				sc->frame = NULL;
 			}