spi: spidev_test: Check input_tx and input_file first after parse options

It is better to check input_tx and input_file first after parse options.
Otherwise, it will do some useless operations when both -p and --input
are selected.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1581567368-8055-2-git-send-email-yangtiezhu@loongson.cnSigned-off-by: Mark Brown <broonie@kernel.org>

tools/spi/spidev_test.c

@@ -404,6 +404,9 @@ int main(int argc, char *argv[])
 
 	parse_opts(argc, argv);
 
+	if (input_tx && input_file)
+		pabort("only one of -p and --input may be selected");
+
 	fd = open(device, O_RDWR);
 	if (fd < 0)
 		pabort("can't open device");
@@ -445,9 +448,6 @@ int main(int argc, char *argv[])
 	printf("bits per word: %d\n", bits);
 	printf("max speed: %d Hz (%d KHz)\n", speed, speed/1000);
 
-	if (input_tx && input_file)
-		pabort("only one of -p and --input may be selected");
-
 	if (input_tx)
 		transfer_escaped_string(fd, input_tx);
 	else if (input_file)