r600: fix atomic counter index mode getting emitted on pre-cayman

This is a regression since I added cayman atomic support, not sure
it fixes anything, but the shader dumps look better.

Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index 06d7ca0..2650a33 100644 (file)
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -7902,7 +7902,7 @@ static int tgsi_set_gds_temp(struct r600_shader_ctx *ctx,
                             int *uav_id_p, int *uav_index_mode_p)
 {
        struct tgsi_full_instruction *inst = &ctx->parse.FullToken.FullInstruction;
-       int uav_id, uav_index_mode;
+       int uav_id, uav_index_mode = 0;
        int r;
        bool is_cm = (ctx->bc->chip_class == CAYMAN);