PCI: brcmstb: Set gen limitation before link, not after

When the user elects to limit the PCIe generation via the appropriate DT
property, apply the settings before the PCIe link-up, not after.

Fixes: c045213 ("PCI: brcmstb: Add Broadcom STB PCIe host controller driver")

Signed-off-by: Jim Quinlan <james.quinlan@broadcom.com>
Fixes: c045213 ("PCI: brcmstb: Add Broadcom STB PCIe host controller driver")
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>

Author: jamesequinlan

drivers/pci/controller/pcie-brcmstb.c

@@ -1324,6 +1324,10 @@ static int brcm_pcie_start_link(struct brcm_pcie *pcie)
 	bool ssc_good = false;
 	int ret, i;
 
+	/* Limit the generation if specified */
+	if (pcie->gen)
+		brcm_pcie_set_gen(pcie, pcie->gen);
+
 	/* Unassert the fundamental reset */
 	ret = pcie->cfg->perst_set(pcie, 0);
 	if (ret)
@@ -1350,9 +1354,6 @@ static int brcm_pcie_start_link(struct brcm_pcie *pcie)
 
 	brcm_config_clkreq(pcie);
 
-	if (pcie->gen)
-		brcm_pcie_set_gen(pcie, pcie->gen);
-
 	if (pcie->ssc) {
 		ret = brcm_pcie_set_ssc(pcie);
 		if (ret == 0)