PCI: altera-msi: Remove redundant dev_err call in altera_msi_probe()

There is a error message within devm_ioremap_resource()
already, so remove the dev_err() call to avoid redundant
error message.

Link: https://lore.kernel.org/r/20210409075748.226141-1-clare.chenhui@huawei.com


Signed-off-by: Chen Hui <clare.chenhui@huawei.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>