pan/bi: Don't set the EOS flag if there's at least one successor

The EOS (End Of Shader) is set if the first successor is NULL, but the
second successor should be checked too.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10369>

src/panfrost/bifrost/bi_pack.c

@@ -38,8 +38,8 @@ bi_pack_header(bi_clause *clause, bi_clause *next_1, bi_clause *next_2, bool tdd
 
         struct bifrost_header header = {
                 .flow_control =
-                        (next_1 == NULL) ? BIFROST_FLOW_END :
-                        clause->flow_control,
+                        (next_1 == NULL && next_2 == NULL) ?
+                        BIFROST_FLOW_END :  clause->flow_control,
                 .terminate_discarded_threads = tdd,
                 .next_clause_prefetch = clause->next_clause_prefetch && next_1,
                 .staging_barrier = clause->staging_barrier,