avcodec/hevcdec: Remove redundant context_initialized

All contexts are always initialized during init, regardless
of whether frame threading is in use or not.

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/hevcdec.c

@@ -3679,7 +3679,6 @@ static av_cold int hevc_init_context(AVCodecContext *avctx)
     ff_bswapdsp_init(&s->bdsp);
 
     s->dovi_ctx.logctx = avctx;
-    s->context_initialized = 1;
     s->eos = 0;
 
     ff_hevc_reset_sei(&s->sei);
@@ -3699,12 +3698,6 @@ static int hevc_update_thread_context(AVCodecContext *dst,
     HEVCContext *s0 = src->priv_data;
     int i, ret;
 
-    if (!s->context_initialized) {
-        ret = hevc_init_context(dst);
-        if (ret < 0)
-            return ret;
-    }
-
     for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
         ff_hevc_unref_frame(s, &s->DPB[i], ~0);
         if (s0->DPB[i].frame->buf[0]) {

libavcodec/hevcdec.h

@@ -563,7 +563,6 @@ typedef struct HEVCContext {
     // type of the first VCL NAL of the current frame
     enum HEVCNALUnitType first_nal_type;
 
-    uint8_t context_initialized;
     int is_nalff;           ///< this flag is != 0 if bitstream is encapsulated
                             ///< as a format defined in 14496-15
     int apply_defdispwin;