scsi: hpsa: free irq on q indexed by h->intr_mode and not i

Use correct index on q, use h->intr_mode instead of i. Issue detected
using static analysis with cppcheck

Fixes: bc2bb154 ("scsi: hpsa: use pci_alloc_irq_vectors and automatic irq affinity")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/hpsa.c

@@ -8220,7 +8220,7 @@ static void hpsa_free_irqs(struct ctlr_info *h)
 
 	if (!h->msix_vectors || h->intr_mode != PERF_MODE_INT) {
 		/* Single reply queue, only one irq to free */
-		free_irq(pci_irq_vector(h->pdev, 0), &h->q[i]);
+		free_irq(pci_irq_vector(h->pdev, 0), &h->q[h->intr_mode]);
 		h->q[h->intr_mode] = 0;
 		return;
 	}