mptcp: use kzalloc in mptcp_pm_nl_get_local_id

kzalloc() is used instead of kmalloc() to allocate a new address entry in
mptcp_pm_nl_get_local_id(), so that the code that sets each field of the
entry to zero or NULL can be deleted. If some fields are added or deleted
in struct mptcp_pm_addr_entry in the future, this part of the code does
not need to be modified.

Signed-off-by: Geliang Tang <[email protected]>

net/mptcp/pm_netlink.c

@@ -1147,16 +1147,14 @@ int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc
 		return ret;
 
 	/* address not found, add to local list */
-	entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
+	entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 	if (!entry)
 		return -ENOMEM;
 
 	entry->addr = *skc;
 	entry->addr.id = 0;
 	entry->addr.port = 0;
-	entry->ifindex = 0;
 	entry->flags = MPTCP_PM_ADDR_FLAG_IMPLICIT;
-	entry->lsk = NULL;
 	ret = mptcp_pm_nl_append_new_local_addr(pernet, entry, true);
 	if (ret < 0)
 		kfree(entry);