diff --git a/libavcodec/iff.c b/libavcodec/iff.c
index fe1baf3a0c..b4d7b4b31c 100644
--- a/libavcodec/iff.c
+++ b/libavcodec/iff.c
@@ -299,14 +299,13 @@ static int extract_header(AVCodecContext *const avctx,
                 avctx->pix_fmt = AV_PIX_FMT_RGB32;
                 av_freep(&s->mask_buf);
                 av_freep(&s->mask_palbuf);
+                if (s->bpp > 16) {
+                    av_log(avctx, AV_LOG_ERROR, "bpp %d too large for palette\n", s->bpp);
+                    return AVERROR(ENOMEM);
+                }
                 s->mask_buf = av_malloc((s->planesize * 32) + AV_INPUT_BUFFER_PADDING_SIZE);
                 if (!s->mask_buf)
                     return AVERROR(ENOMEM);
-                if (s->bpp > 16) {
-                    av_log(avctx, AV_LOG_ERROR, "bpp %d too large for palette\n", s->bpp);
-                    av_freep(&s->mask_buf);
-                    return AVERROR(ENOMEM);
-                }
                 s->mask_palbuf = av_malloc((2 << s->bpp) * sizeof(uint32_t) + AV_INPUT_BUFFER_PADDING_SIZE);
                 if (!s->mask_palbuf) {
                     av_freep(&s->mask_buf);