Check run_command() return code properly

run_command() returns 0 for success, 1 for failure. Fix places which
assume that failure is indicated by a negative return code.

Signed-off-by: Thomas Betker <thomas.betker@rohde-schwarz.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Tested-by: Stefan Roese <sr@denx.de>

arch/arm/cpu/arm926ejs/kirkwood/cpu.c

@@ -210,7 +210,7 @@ static void kw_sysrst_action(void)
 
 	debug("Starting %s process...\n", __FUNCTION__);
 	ret = run_command(s, 0);
-	if (ret < 0)
+	if (ret != 0)
 		debug("Error.. %s failed\n", __FUNCTION__);
 	else
 		debug("%s process finished\n", __FUNCTION__);

board/gdsys/p1022/controlcenterd.c

@@ -221,11 +221,7 @@ void hw_watchdog_reset(void)
 #ifdef CONFIG_TRAILBLAZER
 int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
-	int rcode = 0;
-
-	if (run_command(getenv("bootcmd"), flag) < 0)
-		rcode = 1;
-	return rcode;
+	return run_command(getenv("bootcmd"), flag);
 }
 
 int board_early_init_r(void)

common/cmd_bootm.c

@@ -1087,11 +1087,7 @@ U_BOOT_CMD(
 #if defined(CONFIG_CMD_BOOTD)
 int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
-	int rcode = 0;
-
-	if (run_command(getenv("bootcmd"), flag) < 0)
-		rcode = 1;
-	return rcode;
+	return run_command(getenv("bootcmd"), flag);
 }
 
 U_BOOT_CMD(