radeonsi: shrink the GSVS ring to account for the reduced item sizes

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
diff --git a/src/gallium/drivers/radeonsi/si_state_shaders.c b/src/gallium/drivers/radeonsi/si_state_shaders.c
index 151ed17..4a7f638 100644
--- a/src/gallium/drivers/radeonsi/si_state_shaders.c
+++ b/src/gallium/drivers/radeonsi/si_state_shaders.c
@@ -1961,7 +1961,7 @@
 	unsigned esgs_ring_size = max_gs_waves * 2 * wave_size *
 				  es->esgs_itemsize * gs->gs_input_verts_per_prim;
 	unsigned gsvs_ring_size = max_gs_waves * 2 * wave_size *
-				  gs->max_gsvs_emit_size * (gs->max_gs_stream + 1);
+				  gs->max_gsvs_emit_size;
 
 	min_esgs_ring_size = align(min_esgs_ring_size, alignment);
 	esgs_ring_size = align(esgs_ring_size, alignment);