scsi: snic: Remove unused linkstatus

The (struct vnic_dev).linkstatus buffer is freed in svnic_dev_unregister()
and referenced in svnic_dev_link_status() but never alloc'd. This means
(struct vnic_dev).linkstatus is always null and the dealloc the reference
in svnic_dev_link_status() is dead code.

Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Acked-by: Karan Tilak Kumar <kartilak@cisco.com>
Link: https://patch.msgid.link/20260216141056.59429-2-fourier.thomas@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Author: Thomas-fourier

drivers/scsi/snic/vnic_dev.c

@@ -42,8 +42,6 @@ struct vnic_dev {
 	struct vnic_devcmd_notify *notify;
 	struct vnic_devcmd_notify notify_copy;
 	dma_addr_t notify_pa;
-	u32 *linkstatus;
-	dma_addr_t linkstatus_pa;
 	struct vnic_stats *stats;
 	dma_addr_t stats_pa;
 	struct vnic_devcmd_fw_info *fw_info;
@@ -650,8 +648,6 @@ int svnic_dev_init(struct vnic_dev *vdev, int arg)
 
 int svnic_dev_link_status(struct vnic_dev *vdev)
 {
-	if (vdev->linkstatus)
-		return *vdev->linkstatus;
 
 	if (!vnic_dev_notify_ready(vdev))
 		return 0;
@@ -686,11 +682,6 @@ void svnic_dev_unregister(struct vnic_dev *vdev)
 				sizeof(struct vnic_devcmd_notify),
 				vdev->notify,
 				vdev->notify_pa);
-		if (vdev->linkstatus)
-			dma_free_coherent(&vdev->pdev->dev,
-				sizeof(u32),
-				vdev->linkstatus,
-				vdev->linkstatus_pa);
 		if (vdev->stats)
 			dma_free_coherent(&vdev->pdev->dev,
 				sizeof(struct vnic_stats),