PCI: dwc: Free MSI in dw_pcie_host_init() error path

[ Upstream commit 9e2b5de5 ]

If we ever did MSI-related initializations, we need to call
dw_pcie_free_msi() in the error code path.

Remove the IS_ENABLED(CONFIG_PCI_MSI) check for MSI init because
pci_msi_enabled() already has a stub for !CONFIG_PCI_MSI.
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/pci/controller/dwc/pcie-designware-host.c

@@ -439,7 +439,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
 	if (ret)
 		pci->num_viewport = 2;
 
-	if (IS_ENABLED(CONFIG_PCI_MSI) && pci_msi_enabled()) {
+	if (pci_msi_enabled()) {
 		/*
 		 * If a specific SoC driver needs to change the
 		 * default number of vectors, it needs to implement
@@ -477,7 +477,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
 	if (pp->ops->host_init) {
 		ret = pp->ops->host_init(pp);
 		if (ret)
-			goto error;
+			goto err_free_msi;
 	}
 
 	pp->root_bus_nr = pp->busn->start;
@@ -491,7 +491,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
 
 	ret = pci_scan_root_bus_bridge(bridge);
 	if (ret)
-		goto error;
+		goto err_free_msi;
 
 	bus = bridge->bus;
 
@@ -507,6 +507,9 @@ int dw_pcie_host_init(struct pcie_port *pp)
 	pci_bus_add_devices(bus);
 	return 0;
 
+err_free_msi:
+	if (pci_msi_enabled() && !pp->ops->msi_host_init)
+		dw_pcie_free_msi(pp);
 error:
 	pci_free_host_bridge(bridge);
 	return ret;