tty: mxser: Fix build warning introduced by dfc7b837c7f9 (Re: linux-next: build warning after merge of the tty.current tree)

Fix build warning at mxser.c introduced by dfc7b837c7f9 (tty: mxser: fix
usage of opmode_ioaddr)

Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index f97b196693c6..4c4a23674569 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -1674,15 +1674,15 @@ static int mxser_ioctl(struct tty_struct *tty,
                 return mxser_ioctl_special(cmd, argp);
 
         if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) {
-                if (info->board->chip_flag != MOXA_MUST_MU860_HWID)
-                        return -EFAULT;
-
                 int p;
                 unsigned long opmode;
                 static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f };
                 int shiftbit;
                 unsigned char val, mask;
 
+                if (info->board->chip_flag != MOXA_MUST_MU860_HWID)
+                        return -EFAULT;
+
                 p = tty->index % 4;
                 if (cmd == MOXA_SET_OP_MODE) {
                         if (get_user(opmode, (int __user *) argp))