fix "logically dead code" flagged by coverity

It looks like twe was refactored in 2011 and one error check was missed.
While the device may no longer be widely used, this helps reduce the
coverity alert count.

CID 1453371

ok krw@

diff --git a/sys/dev/ic/twe.c b/sys/dev/ic/twe.c
index f541a0b..d7d17fe 100644 (file)
--- a/sys/dev/ic/twe.c
+++ b/sys/dev/ic/twe.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: twe.c,v 1.65 2021/03/07 06:21:38 jsg Exp $    */
+/*     $OpenBSD: twe.c,v 1.66 2021/07/14 01:11:13 daniel Exp $ */
 
 /*
  * Copyright (c) 2000-2002 Michael Shalayeff.  All rights reserved.
@@ -369,7 +369,7 @@ twe_attach(struct twe_softc *sc)
                cap->param_size = 4;    /* 4 bytes */
 
                lock = TWE_LOCK(sc);
-               twe_cmd(ccb, BUS_DMA_NOWAIT, 1);
+               error = twe_cmd(ccb, BUS_DMA_NOWAIT, 1);
                TWE_UNLOCK(sc, lock);
                scsi_io_put(&sc->sc_iopool, ccb);
                if (error) {