PCI: tegra194: Fix probe path for Endpoint mode

PCI: tegra194: Fix probe path for Endpoint mode

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>