tls: make tls_sw_free_resources static

Make the needlessly global function tls_sw_free_resources static to fix
a gcc/sparse warning.

Signed-off-by: Tobias Klauser <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/tls/tls_sw.c

···
 	return ret;
 }
 
-void tls_sw_free_resources(struct sock *sk)
+static void tls_sw_free_resources(struct sock *sk)
 {
 	struct tls_context *tls_ctx = tls_get_ctx(sk);
 	struct tls_sw_context *ctx = tls_sw_ctx(tls_ctx);