xprtrdma: don't log warnings for flushed completions

Unsignaled send WRs can get flushed as part of normal unmount, so don't
log them as warnings.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

net/sunrpc/xprtrdma/frwr_ops.c

@@ -252,7 +252,10 @@ frwr_sendcompletion(struct ib_wc *wc)
 
 	/* WARNING: Only wr_id and status are reliable at this point */
 	r = (struct rpcrdma_mw *)(unsigned long)wc->wr_id;
-	pr_warn("RPC:       %s: frmr %p flushed, status %s (%d)\n",
+	if (wc->status == IB_WC_WR_FLUSH_ERR)
+		dprintk("RPC:       %s: frmr %p flushed\n", __func__, r);
+	else
+		pr_warn("RPC:       %s: frmr %p error, status %s (%d)\n",
 			__func__, r, ib_wc_status_msg(wc->status), wc->status);
 	r->r.frmr.fr_state = FRMR_IS_STALE;
 }