[PATCH 4.15 53/84] PCI: rcar: Handle rcar_pcie_parse_request_of_pci_ranges() failures

[Greg Kroah-Hartman]

4.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>


[ Upstream commit 83c75ddd816e979802bd244ad494139f28152921 ]

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: 5d2917d469faab72 ("PCI: rcar: Convert to DT resource parsing API")
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/pci/host/pcie-rcar.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/pci/host/pcie-rcar.c
+++ b/drivers/pci/host/pcie-rcar.c
@@ -1123,7 +1123,9 @@ static int rcar_pcie_probe(struct platfo
 
 	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) {
@@ -1178,6 +1180,7 @@ err_pm_disable:
 
 err_free_resource_list:
 	pci_free_resource_list(&pcie->resources);
+err_free_bridge:
 	pci_free_host_bridge(bridge);
 
 	return err;