binder: change error code from postive to negative in binder_transaction

Depending on the context, the error return value
here (extra_buffers_size < added_size) should be
negative.
Acked-by: NMartijn Coenen <maco@android.com>
Acked-by: NChristian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: NZhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201026110314.135481-1-zhangqilong3@huawei.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/android/binder.c

@@ -3103,7 +3103,7 @@ static void binder_transaction(struct binder_proc *proc,
 		if (extra_buffers_size < added_size) {
 			/* integer overflow of extra_buffers_size */
 			return_error = BR_FAILED_REPLY;
-			return_error_param = EINVAL;
+			return_error_param = -EINVAL;
 			return_error_line = __LINE__;
 			goto err_bad_extra_size;
 		}