scsi: hptiop: fix calls to dma_set_mask()

The change to use dma_set_mask() incorrectly made a second call with the 32
bit DMA mask value when the call with the 64 bit DMA mask value succeeded.

Fixes: 453cd370 ("scsi: hptiop: use dma_set_mask")
Cc: <stable@vger.kernel.org>
Suggested-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/hptiop.c

@@ -1292,6 +1292,7 @@ static int hptiop_probe(struct pci_dev *pcidev, const struct pci_device_id *id)
 	dma_addr_t start_phy;
 	void *start_virt;
 	u32 offset, i, req_size;
+	int rc;
 
 	dprintk("hptiop_probe(%p)\n", pcidev);
 
@@ -1308,9 +1309,12 @@ static int hptiop_probe(struct pci_dev *pcidev, const struct pci_device_id *id)
 
 	/* Enable 64bit DMA if possible */
 	iop_ops = (struct hptiop_adapter_ops *)id->driver_data;
-	if (dma_set_mask(&pcidev->dev,
-			 DMA_BIT_MASK(iop_ops->hw_dma_bit_mask)) ||
-	    dma_set_mask(&pcidev->dev, DMA_BIT_MASK(32))) {
+	rc = dma_set_mask(&pcidev->dev,
+			  DMA_BIT_MASK(iop_ops->hw_dma_bit_mask));
+	if (rc)
+		rc = dma_set_mask(&pcidev->dev, DMA_BIT_MASK(32));
+
+	if (rc) {
 		printk(KERN_ERR "hptiop: fail to set dma_mask\n");
 		goto disable_pci_device;
 	}