PCI: tegra: Fix reporting GPIO error value

[ Upstream commit 63605f1cfcc56bcb25c48bbee75a679d85ba7675 ]

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

Link: https://lore.kernel.org/r/20200414102512.27506-1-pali@kernel.org


Signed-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>
Stable-dep-of: eff21f5da308 ("PCI: tegra: Fix OF node reference leak")
Signed-off-by: Sasha Levin <sashal@kernel.org>