scsi: hisi_sas: set dma mask before allocate DMA memory

The device DMA mask was being set after the bulk of the DMA allocations
in the driver init, so potentially DMA allocates fail.  To resolve,
relocate before allocating the DMA memory when initialising the driver.
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/hisi_sas/hisi_sas_main.c

@@ -1439,6 +1439,12 @@ static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
 				     &hisi_hba->queue_count))
 		goto err_out;
 
+	if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) &&
+	    dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) {
+		dev_err(dev, "No usable DMA addressing method\n");
+		goto err_out;
+	}
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	hisi_hba->regs = devm_ioremap_resource(dev, res);
 	if (IS_ERR(hisi_hba->regs))
@@ -1486,13 +1492,6 @@ int hisi_sas_probe(struct platform_device *pdev,
 	hisi_hba = shost_priv(shost);
 	platform_set_drvdata(pdev, sha);
 
-	if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) &&
-	    dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) {
-		dev_err(dev, "No usable DMA addressing method\n");
-		rc = -EIO;
-		goto err_out_ha;
-	}
-
 	phy_nr = port_nr = hisi_hba->n_phy;
 
 	arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);