iommu/mediatek: Fix error code in probe()

This error path is supposed to return -EINVAL.  It used to return
directly but we added some clean up and accidentally removed the
error code.  Also I fixed a typo in the error message.

Fixes: c0b57581 ("iommu/mediatek: Add power-domain operation")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Yong Wu <yong.wu@mediatek.com>
Link: https://lore.kernel.org/r/YB0+GU5akSdu29Vu@mwandaSigned-off-by: Joerg Roedel <jroedel@suse.de>

drivers/iommu/mtk_iommu.c

@@ -886,7 +886,8 @@ static int mtk_iommu_probe(struct platform_device *pdev)
 	link = device_link_add(data->smicomm_dev, dev,
 			DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME);
 	if (!link) {
-		dev_err(dev, "Unable link %s.\n", dev_name(data->smicomm_dev));
+		dev_err(dev, "Unable to link %s.\n", dev_name(data->smicomm_dev));
+		ret = -EINVAL;
 		goto out_runtime_disable;
 	}