platform/x86: wmi: replace usage of found with dedicated list iterator variable

To move the list iterator variable into the list_for_each_entry_*()
macro in the future it should be avoided to use the list iterator
variable after the loop body.

To *never* use the list iterator variable after the loop it was
concluded to use a separate iterator variable instead of a
found boolean [1].

This removes the need to use a found variable and simply checking if
the variable was set, can determine if the break/goto was hit.

Link: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWXJ6w@mail.gmail.com/Signed-off-by: Jakob Koschel <jakobkoschel@gmail.com>
Link: https://lore.kernel.org/r/20220324072015.62063-1-jakobkoschel@gmail.comReviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/wmi.c

@@ -1308,21 +1308,20 @@ acpi_wmi_ec_space_handler(u32 function, acpi_physical_address address,
 static void acpi_wmi_notify_handler(acpi_handle handle, u32 event,
 				    void *context)
 {
-	struct wmi_block *wblock;
-	bool found_it = false;
+	struct wmi_block *wblock = NULL, *iter;
 
-	list_for_each_entry(wblock, &wmi_block_list, list) {
-		struct guid_block *block = &wblock->gblock;
+	list_for_each_entry(iter, &wmi_block_list, list) {
+		struct guid_block *block = &iter->gblock;
 
-		if (wblock->acpi_device->handle == handle &&
+		if (iter->acpi_device->handle == handle &&
 		    (block->flags & ACPI_WMI_EVENT) &&
 		    (block->notify_id == event)) {
-			found_it = true;
+			wblock = iter;
 			break;
 		}
 	}
 
-	if (!found_it)
+	if (!wblock)
 		return;
 
 	/* If a driver is bound, then notify the driver. */