PCI: imx6: Return real error code from imx6_add_pcie_port()
PCI: imx6: Return real error code from imx6_add_pcie_port()

When devm_request_irq() fails, imx6_add_pcie_port() should return the real
error code instead of always returning -ENODEV.

Signed-off-by: Fabio Estevam <679188261afeb60eb822cd934fd7b46a48ddd743@freescale.com>
Signed-off-by: Bjorn Helgaas <9e76dc0ac1175a4a419ed3d3687b350e00420f02@kernel.org>
Reviewed-by: Lucas Stach <48c9e973d8f86eb0cdae200124c5925db7587c4e@pengutronix.de>
KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs