scsi: fnic: Replace use of sizeof with standard usage

Remove cast and replace use of sizeof(struct) with standard usage of
sizeof.

Suggested-by: Dan Carpenter <[email protected]>
Fixes: a63e78e ("scsi: fnic: Add support for fabric based solicited requests and responses")
Reviewed-by: Sesidhar Baddela <[email protected]>
Reviewed-by: Arulprabhu Ponnusamy <[email protected]>
Reviewed-by: Gian Carlo Boffa <[email protected]>
Reviewed-by: Arun Easi <[email protected]>
Signed-off-by: Karan Tilak Kumar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Martin K. Petersen <[email protected]>

Author: Karan Tilak Kumar

drivers/scsi/fnic/fdls_disc.c

@@ -318,8 +318,7 @@ void fdls_schedule_oxid_free_retry_work(struct work_struct *work)
 			"Schedule oxid free. oxid idx: %d\n", idx);
 
 		spin_unlock_irqrestore(&fnic->fnic_lock, fnic->lock_flags);
-		reclaim_entry = (struct reclaim_entry_s *)
-						kzalloc(sizeof(struct reclaim_entry_s), GFP_KERNEL);
+		reclaim_entry = kzalloc(sizeof(*reclaim_entry), GFP_KERNEL);
 		spin_lock_irqsave(&fnic->fnic_lock, fnic->lock_flags);
 
 		if (!reclaim_entry) {