PCI: layerscape: Fix drvdata usage before assignment

Commit fefe6733e516 ("PCI: layerscape: Move struct pcie_port setup
to probe function") changed the init ordering of the pcie structure,
but started to use the pcie->drvdata field before initializing it.
Mayhem follows.

Fix this by moving the drvdata assignment right before the first use.
Tested on LS2085a.

Fixes: efe6733e516 ("PCI: layerscape: Move struct pcie_port setup to probe function")
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/host/pci-layerscape.c

@@ -247,6 +247,7 @@ static int __init ls_pcie_probe(struct platform_device *pdev)
 
 	pp = &pcie->pp;
 	pp->dev = dev;
+	pcie->drvdata = match->data;
 	pp->ops = pcie->drvdata->ops;
 
 	dbi_base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
@@ -256,7 +257,6 @@ static int __init ls_pcie_probe(struct platform_device *pdev)
 		return PTR_ERR(pcie->pp.dbi_base);
 	}
 
-	pcie->drvdata = match->data;
 	pcie->lut = pcie->pp.dbi_base + pcie->drvdata->lut_offset;
 
 	if (!ls_pcie_is_bridge(pcie))