RDMA/hns: Fix an error code in hns_roce_v2_init_eq_table()

The error code isn't set on this path.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

@@ -5125,6 +5125,7 @@ static int hns_roce_v2_init_eq_table(struct hns_roce_dev *hr_dev)
 		create_singlethread_workqueue("hns_roce_irq_workqueue");
 	if (!hr_dev->irq_workq) {
 		dev_err(dev, "Create irq workqueue failed!\n");
+		ret = -ENOMEM;
 		goto err_request_irq_fail;
 	}