nfc-mfultralight: also set failure state on uid write error

Currently, we return false, and after turning set the bFailure state.
This is of course not possible.

Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>

utils/nfc-mfultralight.c

@@ -271,8 +271,8 @@ write_card(bool write_otp, bool write_lock, bool write_uid)
   } else {
     if (!check_magic()) {
       printf("\nUnable to unlock card - are you sure the card is magic?\n");
-      return false;
       bFailure = false;
+      return false;
     }
   }