i7core_edac: We need to use list_for_each_entry_safe to avoid errors

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c
index c3fec5d..2e4b0ab 100644
--- a/drivers/edac/i7core_edac.c
+++ b/drivers/edac/i7core_edac.c
@@ -1124,6 +1124,7 @@
 		.show  = i7core_ce_regs_show,
 		.store = NULL,
 	},
+	{ .attr = { .name = NULL } }
 };
 
 /****************************************************************************
@@ -1155,9 +1156,9 @@
 
 static void i7core_put_all_devices(void)
 {
-	struct i7core_dev *i7core_dev;
+	struct i7core_dev *i7core_dev, *tmp;
 
-	list_for_each_entry(i7core_dev, &i7core_edac_list, list)
+	list_for_each_entry_safe(i7core_dev, tmp, &i7core_edac_list, list)
 		i7core_put_devices(i7core_dev);
 }