[SCSI] sym53c8xx: fix free_irq() regression

The following commit changed the pointer passed to request_irq(), but
failed to change the pointer passed to free_irq():

commit 99c9e0a1d6cfe1ba1169a7a81435ee85bc00e4a1
Author: Matthew Wilcox <[e-mail]>
Date: Fri Oct 5 15:55:12 2007 -0400

[SCSI] sym53c8xx: Make interrupt handler capable of returning IRQ_NONE

...

The result is that free_irq() doesn't actually take any action. This
patch fixes it.

Signed-off-by: Tony Battersby <[e-mail]>
Acked-by: Christoph Hellwig <[e-mail]>
Signed-off-by: James Bottomley <[e-mail]>

drivers/scsi/sym53c8xx_2/sym_glue.c

···
 	 *  Free O/S specific resources.
 	 */
 	if (pdev->irq)
-		free_irq(pdev->irq, np);
+		free_irq(pdev->irq, np->s.host);
 	if (np->s.ioaddr)
 		pci_iounmap(pdev, np->s.ioaddr);
 	if (np->s.ramaddr)