[PATCH] meminfo: correct "free" memory region size

[Shiji Yang]

The size of free memory should be $lmb_base - $ram_base.

Signed-off-by: Shiji Yang <yangshiji66 at outlook.com>
---

Before:
=> meminfo
DRAM:  64 MiB

Region           Base     Size      End      Gap
------------------------------------------------
code         83fa0000    5fdf8 83fffdf8
malloc       83e90000   110000 83fa0000        0
board_info   83e8ffd0       30 83e90000        0
global_data  83e8ff10       b4 83e8ffc4        c
devicetree   83e8e690     186d 83e8fefd       13
stack        82e8e000  1000000 83e8e000      690
lmb          82e8e000  1172000 84000000 fee8e000
free         80000000 82e8e000  2e8e000 80000000

After:
=> meminfo
DRAM:  64 MiB

Region           Base     Size      End      Gap
------------------------------------------------
code         83fa0000    5f260 83fff260
malloc       83e90000   110000 83fa0000        0
board_info   83e8ffd0       30 83e90000        0
global_data  83e8ff10       b4 83e8ffc4        c
devicetree   83e8e690     186d 83e8fefd       13
stack        82e8e000  1000000 83e8e000      690
lmb          82e8e000  1172000 84000000 fee8e000
free         80000000  2e8e000 82e8e000        0

 cmd/meminfo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmd/meminfo.c b/cmd/meminfo.c
index acdb38dcba0..aa3b5bafe17 100644
--- a/cmd/meminfo.c
+++ b/cmd/meminfo.c
@@ -93,7 +93,7 @@ static int do_meminfo(struct cmd_tbl *cmdtp, int flag, int argc,
 	print_region("stack", stk_bot, CONFIG_STACK_SIZE, &upto);
 	if (IS_ENABLED(CONFIG_LMB))
 		show_lmb(lmb_get(), &upto);
-	print_region("free", gd->ram_base, upto, &upto);
+	print_region("free", gd->ram_base, upto - gd->ram_base, &upto);
 
 	return 0;
 }
-- 
2.50.0