avcodec/mpegvideo: Don't pretend dct_init can fail

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/mpegvideo.c

@@ -273,7 +273,7 @@ static void gray8(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
 }
 
 /* init common dct for both encoder and decoder */
-static av_cold int dct_init(MpegEncContext *s)
+static av_cold void dct_init(MpegEncContext *s)
 {
     ff_blockdsp_init(&s->bdsp);
     ff_hpeldsp_init(&s->hdsp, s->avctx->flags);
@@ -314,8 +314,6 @@ static av_cold int dct_init(MpegEncContext *s)
 #elif ARCH_MIPS
     ff_mpv_common_init_mips(s);
 #endif
-
-    return 0;
 }
 
 av_cold void ff_init_scantable(const uint8_t *permutation, ScanTable *st,