RDMA/efa: Remove unused cpu field from irq struct

The cpu field in efa_irq struct is unused, remove it.

Link: https://lore.kernel.org/r/20210811151131.39138-3-galpress@amazon.comReviewed-by: Firas JahJah <firasj@amazon.com>
Reviewed-by: Yossi Leybovich <sleybo@amazon.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/efa/efa.h

 /* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
 /*
- * Copyright 2018-2020 Amazon.com, Inc. or its affiliates. All rights reserved.
+ * Copyright 2018-2021 Amazon.com, Inc. or its affiliates. All rights reserved.
  */
 
 #ifndef _EFA_H_
@@ -27,7 +27,6 @@
 struct efa_irq {
 	irq_handler_t handler;
 	void *data;
-	int cpu;
 	u32 vector;
 	cpumask_t affinity_hint_mask;
 	char name[EFA_IRQNAME_SIZE];

drivers/infiniband/hw/efa/efa_main.c

@@ -109,7 +109,6 @@ static void efa_setup_mgmnt_irq(struct efa_dev *dev)
 	dev->admin_irq.vector =
 		pci_irq_vector(dev->pdev, dev->admin_msix_vector_idx);
 	cpu = cpumask_first(cpu_online_mask);
-	dev->admin_irq.cpu = cpu;
 	cpumask_set_cpu(cpu,
 			&dev->admin_irq.affinity_hint_mask);
 	dev_info(&dev->pdev->dev, "Setup irq:0x%p vector:%d name:%s\n",