PCI: tegra194: Fix probe path for Endpoint mode

PCI: tegra194: Fix probe path for Endpoint mode

[ Upstream commit 19326006a21da26532d982254677c892dae8f29b ]

Tegra194 PCIe probe path is taking failure path in success case for
Endpoint mode. Return success from the switch case instead of going
into the failure path.

Fixes: c57247f940e8 ("PCI: tegra: Add support for PCIe endpoint mode in Tegra194")
Link: https://lore.kernel.org/linux-pci/20240408093053.3948634-1-vidyas@nvidia.com
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>