migration/tls: Remove unused parameter

The MigrationState parameter is not used at
migration_tls_channel_process_incoming().

The last usage was removed by commit 3f461a0c0b ("migration: Drop
unused parameter for migration_tls_get_creds()")

Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Prasad Pandit <pjp@fedoraproject.org>
Link: https://lore.kernel.org/qemu-devel/20260123141656.6765-4-farosas@suse.de
Signed-off-by: Fabiano Rosas <farosas@suse.de>

migration/channel.c

@@ -32,7 +32,6 @@
  */
 void migration_channel_process_incoming(QIOChannel *ioc)
 {
-    MigrationState *s = migrate_get_current();
     MigrationIncomingState *mis = migration_incoming_get_current();
     Error *local_err = NULL;
 
@@ -40,7 +39,7 @@ void migration_channel_process_incoming(QIOChannel *ioc)
         ioc, object_get_typename(OBJECT(ioc)));
 
     if (migrate_channel_requires_tls_upgrade(ioc)) {
-        migration_tls_channel_process_incoming(s, ioc, &local_err);
+        migration_tls_channel_process_incoming(ioc, &local_err);
     } else {
         migration_ioc_register_yank(ioc);
         migration_ioc_process_incoming(ioc, &local_err);

migration/tls.c

@@ -71,9 +71,7 @@ static void migration_tls_incoming_handshake(QIOTask *task,
     object_unref(OBJECT(ioc));
 }
 
-void migration_tls_channel_process_incoming(MigrationState *s,
-                                            QIOChannel *ioc,
-                                            Error **errp)
+void migration_tls_channel_process_incoming(QIOChannel *ioc, Error **errp)
 {
     QCryptoTLSCreds *creds;
     QIOChannelTLS *tioc;

migration/tls.h

@@ -24,9 +24,7 @@
 #include "io/channel.h"
 #include "io/channel-tls.h"
 
-void migration_tls_channel_process_incoming(MigrationState *s,
-                                            QIOChannel *ioc,
-                                            Error **errp);
+void migration_tls_channel_process_incoming(QIOChannel *ioc, Error **errp);
 
 QIOChannelTLS *migration_tls_client_create(QIOChannel *ioc,
                                            const char *hostname,