PCI: rcar: Handle rcar_pcie_parse_request_of_pci_ranges() failures

[ Upstream commit 83c75ddd ]

rcar_pcie_parse_request_of_pci_ranges() can fail and return an error
code, but this is not checked nor handled.

Fix this by adding the missing error handling.

Fixes: 5d2917d4 ("PCI: rcar: Convert to DT resource parsing API")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/pci/host/pcie-rcar.c

@@ -1141,7 +1141,9 @@ static int rcar_pcie_probe(struct platform_device *pdev)
 
 	INIT_LIST_HEAD(&pcie->resources);
 
-	rcar_pcie_parse_request_of_pci_ranges(pcie);
+	err = rcar_pcie_parse_request_of_pci_ranges(pcie);
+	if (err)
+		goto err_free_bridge;
 
 	err = rcar_pcie_get_resources(pcie);
 	if (err < 0) {
@@ -1196,6 +1198,7 @@ static int rcar_pcie_probe(struct platform_device *pdev)
 
 err_free_resource_list:
 	pci_free_resource_list(&pcie->resources);
+err_free_bridge:
 	pci_free_host_bridge(bridge);
 
 	return err;