diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 61c46d66c01e..be1df85e5e2d 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -558,12 +558,12 @@ static int msi_free_irqs(struct pci_dev* dev)
 
 	list_for_each_entry_safe(entry, tmp, &dev->msi_list, list) {
 		if (entry->msi_attrib.type == PCI_CAP_ID_MSIX) {
-			if (list_is_last(&entry->list, &dev->msi_list))
-				iounmap(entry->mask_base);
-
 			writel(1, entry->mask_base + entry->msi_attrib.entry_nr
 				  * PCI_MSIX_ENTRY_SIZE
 				  + PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET);
+
+			if (list_is_last(&entry->list, &dev->msi_list))
+				iounmap(entry->mask_base);
 		}
 		list_del(&entry->list);
 		kfree(entry);