mhi: pci_generic: Fix implicit conversion warning

Fix the following warning with explicit cast:

warning: implicit conversion from 'unsigned long long' to
'dma_addr_t' (aka 'unsigned int')
mhi_cntrl->iova_stop = DMA_BIT_MASK(info->dma_data_width);

Fixes: 855a70c1 ("bus: mhi: Add MHI PCI support for WWAN modems")
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

drivers/bus/mhi/pci_generic.c

@@ -273,7 +273,7 @@ static int mhi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	mhi_cntrl_config = info->config;
 	mhi_cntrl->cntrl_dev = &pdev->dev;
 	mhi_cntrl->iova_start = 0;
-	mhi_cntrl->iova_stop = DMA_BIT_MASK(info->dma_data_width);
+	mhi_cntrl->iova_stop = (dma_addr_t)DMA_BIT_MASK(info->dma_data_width);
 	mhi_cntrl->fw_image = info->fw;
 	mhi_cntrl->edl_image = info->edl;