When devm_ioremap_resource() fails, __devm_ioremap_resource() prints an
error message including the device name, failure cause, and possibly
resource information.

Remove the error message from imx6_pcie_probe() since it's redundant.

Link: https://lore.kernel.org/r/20210511114547.5601-1-thunder.leizhen@huawei.comReported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NZhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NKrzysztof Wilczyński <kw@linux.com>
Acked-by: NRichard Zhu <hongxing.zhu@nxp.com>