PCI: endpoint: pci-epf-vntb: Fix call pci_epc_mem_free_addr() in error path

PCI: endpoint: pci-epf-vntb: Fix call pci_epc_mem_free_addr() in error path

[ Upstream commit b7899de6f735ff8c101646569eaa9868efe42057 ]

Replace pci_epc_mem_free_addr() with pci_epf_free_space() in the
error handle path to match pci_epf_alloc_space().

Link: https://lore.kernel.org/r/20221102141014.1025893-4-Frank.Li@nxp.com
Fixes: c8d1a9e3b10b ("PCI: endpoint: Support NTB transfer between RC and EP")
Signed-off-by: Frank Li <frank.li@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>