PCI: mobiveil: Move the host initialization into a function

Move the host initialization related operations into a new
function so that it can be reused by other platform
PCIe host drivers integrating the Mobiveil GPEX.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
[lorenzo.pieralisi@arm.com: updated commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <amurray@thegoodpenguin.co.uk>

drivers/pci/controller/pcie-mobiveil.c

@@ -873,27 +873,15 @@ static int mobiveil_pcie_init_irq_domain(struct mobiveil_pcie *pcie)
 	return 0;
 }
 
-static int mobiveil_pcie_probe(struct platform_device *pdev)
+static int mobiveil_pcie_host_probe(struct mobiveil_pcie *pcie)
 {
-	struct mobiveil_pcie *pcie;
+	struct mobiveil_root_port *rp = &pcie->rp;
+	struct pci_host_bridge *bridge = rp->bridge;
+	struct device *dev = &pcie->pdev->dev;
 	struct pci_bus *bus;
 	struct pci_bus *child;
-	struct pci_host_bridge *bridge;
-	struct device *dev = &pdev->dev;
-	struct mobiveil_root_port *rp;
 	int ret;
 
-	/* allocate the PCIe port */
-	bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
-	if (!bridge)
-		return -ENOMEM;
-
-	pcie = pci_host_bridge_priv(bridge);
-	rp = &pcie->rp;
-	rp->bridge = bridge;
-
-	pcie->pdev = pdev;
-
 	ret = mobiveil_pcie_parse_dt(pcie);
 	if (ret) {
 		dev_err(dev, "Parsing DT failed, ret: %x\n", ret);
@@ -956,6 +944,25 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
 	return 0;
 }
 
+static int mobiveil_pcie_probe(struct platform_device *pdev)
+{
+	struct mobiveil_pcie *pcie;
+	struct pci_host_bridge *bridge;
+	struct device *dev = &pdev->dev;
+
+	/* allocate the PCIe port */
+	bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
+	if (!bridge)
+		return -ENOMEM;
+
+	pcie = pci_host_bridge_priv(bridge);
+	pcie->rp.bridge = bridge;
+
+	pcie->pdev = pdev;
+
+	return mobiveil_pcie_host_probe(pcie);
+}
+
 static const struct of_device_id mobiveil_pcie_of_match[] = {
 	{.compatible = "mbvl,gpex40-pcie",},
 	{},