RDMA/cxgb3: Don't zero QP attrs when moving to IDLE

QP attributes must stay initialized when moving back to IDLE. Zeroing
them will crash the system in _flush_qp() if the QP is subsequently
moved to ERROR and back to IDLE.

Signed-off-by: Steve Wise <[e-mail]>
Signed-off-by: Roland Dreier <[e-mail]>

drivers/infiniband/hw/cxgb3/iwch_qp.c

···
 			goto out;
 		}
 		qhp->attr.state = IWCH_QP_STATE_IDLE;
-		memset(&qhp->attr, 0, sizeof(qhp->attr));
 		break;
 	case IWCH_QP_STATE_TERMINATE:
 		if (!internal) {