tipc: Remove redundant call to TLV_SPACE()

The purpose of TLV_SPACE() is to add the TLV descriptor size to the size of
the TLV value passed as argument and align the resulting size to
TLV_ALIGNTO.

tipc_tlv_alloc() calls TLV_SPACE() on its argument. In other words,
tipc_tlv_alloc() takes its argument as the size of the TLV value. So the
call to TLV_SPACE() in tipc_get_err_tlv() is redundant. Let's remove this
redundancy.

Acked-by: Paolo Abeni <[e-mail]>
Signed-off-by: Shigeru Yoshida <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/tipc/netlink_compat.c

···
 	int str_len = strlen(str) + 1;
 	struct sk_buff *buf;
 
-	buf = tipc_tlv_alloc(TLV_SPACE(str_len));
+	buf = tipc_tlv_alloc(str_len);
 	if (buf)
 		tipc_add_tlv(buf, TIPC_TLV_ERROR_STRING, str, str_len);