avcodec/tiff: move bpp check to after "end:"

This ensures that all current and future code-pathes get bpp checked
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/tiff.c

@@ -847,13 +847,6 @@ static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
                 s->bpp = -1;
             }
         }
-        if (s->bpp > 64U) {
-            av_log(s->avctx, AV_LOG_ERROR,
-                   "This format is not supported (bpp=%d, %d components)\n",
-                   s->bpp, count);
-            s->bpp = 0;
-            return AVERROR_INVALIDDATA;
-        }
         break;
     case TIFF_SAMPLES_PER_PIXEL:
         if (count != 1) {
@@ -1166,6 +1159,13 @@ static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
         }
     }
 end:
+    if (s->bpp > 64U) {
+        av_log(s->avctx, AV_LOG_ERROR,
+                "This format is not supported (bpp=%d, %d components)\n",
+                s->bpp, count);
+        s->bpp = 0;
+        return AVERROR_INVALIDDATA;
+    }
     bytestream2_seek(&s->gb, start, SEEK_SET);
     return 0;
 }