RDMA/rxe: Set queue pair cur_qp_state when being queried

Same with commit e375b9c ("RDMA/cxgb4: Set queue pair state when
 being queried"). The API for ib_query_qp requires the driver to set
cur_qp_state on return, add the missing set.

Fixes: 8700e3e ("Soft RoCE driver")
Signed-off-by: Liu Jian <liujian56@huawei.com>
Link: https://patch.msgid.link/20241031092019.2138467-1-liujian56@huawei.com
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

Author: liujian56

drivers/infiniband/sw/rxe/rxe_qp.c

@@ -775,6 +775,7 @@ int rxe_qp_to_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask)
 	 * Yield the processor
 	 */
 	spin_lock_irqsave(&qp->state_lock, flags);
+	attr->cur_qp_state = qp_state(qp);
 	if (qp->attr.sq_draining) {
 		spin_unlock_irqrestore(&qp->state_lock, flags);
 		cond_resched();