net: tipc: bcast: Replace GFP_ATOMIC with GFP_KERNEL in tipc_bcast_init()

tipc_bcast_init() is never called in atomic context.
It calls kzalloc() with GFP_ATOMIC, which is not necessary.
GFP_ATOMIC can be replaced with GFP_KERNEL.

This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/tipc/bcast.c

@@ -512,7 +512,7 @@ int tipc_bcast_init(struct net *net)
 	struct tipc_bc_base *bb = NULL;
 	struct tipc_link *l = NULL;
 
-	bb = kzalloc(sizeof(*bb), GFP_ATOMIC);
+	bb = kzalloc(sizeof(*bb), GFP_KERNEL);
 	if (!bb)
 		goto enomem;
 	tn->bcbase = bb;