rhashtable: initialize atomic nelems variable

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Cc: Thomas Graf <tgraf@suug.ch>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/lib/rhashtable.c b/lib/rhashtable.c
index 7fb474b..8023b55 100644
--- a/lib/rhashtable.c
+++ b/lib/rhashtable.c
@@ -847,6 +847,7 @@
 	if (tbl == NULL)
 		return -ENOMEM;
 
+	atomic_set(&ht->nelems, 0);
 	atomic_set(&ht->shift, ilog2(tbl->size));
 	RCU_INIT_POINTER(ht->tbl, tbl);
 	RCU_INIT_POINTER(ht->future_tbl, tbl);