PCI: epf-vntb: Return actual error code during pci_vntb_probe() failure

If dma_set_mask_and_coherent() in pci_vntb_probe() fails, return the actual
error code instead of -EINVAL.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231201033057.1399131-2-yangyingliang@huaweicloud.com


[mani: reworded commit message and subject]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>