IB/rxe: Update qp state for user query

The method rxe_qp_error() transitions QP to error state
and make sure the QP is drained. It did not though update
the QP state for user's query.

This patch fixes this.

Fixes: 8700e3e7c485 ("Soft RoCE driver")
Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com>
Reviewed-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/sw/rxe/rxe_qp.c

@@ -574,6 +574,7 @@ void rxe_qp_error(struct rxe_qp *qp)
 {
 	qp->req.state = QP_STATE_ERROR;
 	qp->resp.state = QP_STATE_ERROR;
+	qp->attr.qp_state = IB_QPS_ERR;
 
 	/* drain work and packet queues */
 	rxe_run_task(&qp->resp.task, 1);