PCI: tegra: Fix reporting GPIO error value

Error code is stored in rp->reset_gpio and not in err variable.

Link: https://lore.kernel.org/r/20200414102512.27506-1-pali@kernel.orgSigned-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Rob Herring <robh@kernel.org>

drivers/pci/controller/pci-tegra.c

@@ -2219,8 +2219,8 @@ static int tegra_pcie_parse_dt(struct tegra_pcie *pcie)
 			if (PTR_ERR(rp->reset_gpio) == -ENOENT) {
 				rp->reset_gpio = NULL;
 			} else {
-				dev_err(dev, "failed to get reset GPIO: %d\n",
-					err);
+				dev_err(dev, "failed to get reset GPIO: %ld\n",
+					PTR_ERR(rp->reset_gpio));
 				return PTR_ERR(rp->reset_gpio);
 			}
 		}