[PATCH v9 1/3] PCI: cadence: Preserve all error codes in cdns_plat_pcie_probe()

The blamed commit functionally changed the error path of
cdns_pcie_host_probe(), now cdns_plat_pcie_probe().

When the old code path executed "goto err_get_sync", the PCIe controller
probe function propagated the pm_runtime_get_sync() error code. The new
code doesn't, and returns 0.

Similarly for the "goto err_init" previously triggered by
cdns_pcie_host_init() errors, and now triggered by
cdns_pcie_host_setup() and cdns_pcie_ep_setup() errors. These are not
propagated and will result in probing success, which is incorrect.

Fixes: bd22885aa188 ("PCI: cadence: Refactor driver to use as a core library")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
---
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: "Krzysztof Wilczyński" <kwilczynski@kernel.org>
Cc: Lorenzo Pieralisi <lpieralisi@kernel.org>
Cc: Manikandan K Pillai <redacted>
Cc: Manivannan Sadhasivam <mani@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Tom Joseph <redacted>

v8->v9: add Bjorn's Acked-by, expand CC list
v7->v8: patch is new, issue was flagged by Sashiko
https://sashiko.dev/#/patchset/20260430110652.558622-1-vladimir.oltean@nxp.com
---
 drivers/pci/controller/cadence/pcie-cadence-plat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/controller/cadence/pcie-cadence-plat.c b/drivers/pci/controller/cadence/pcie-cadence-plat.c
index a1ea24fc3b63..8aed8b4c3e11 100644
--- a/drivers/pci/controller/cadence/pcie-cadence-plat.c
+++ b/drivers/pci/controller/cadence/pcie-cadence-plat.c

@@ -126,7 +126,7 @@ static int cdns_plat_pcie_probe(struct platform_device *pdev)
 	while (phy_count--)
 		device_link_del(cdns_plat_pcie->pcie->link[phy_count]);
 
-	return 0;
+	return ret;
 }
 
 static void cdns_plat_pcie_shutdown(struct platform_device *pdev)

-- 
2.34.1