Since the dw_pcie_ep_init() function is already fetching the 'addr_space'
region, no need to do the same in this driver.

Link: https://lore.kernel.org/r/20240220161924.3871774-12-Frank.Li@nxp.comSigned-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>