i2400m: keep index within ms_to_errno[]

Ensure that index `status' remains within ms_to_errno[]
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>

drivers/net/wimax/i2400m/control.c

@@ -263,7 +263,7 @@ int i2400m_msg_check_status(const struct i2400m_l3l4_hdr *l3l4_hdr,
 
 	if (status == 0)
 		return 0;
-	if (status > ARRAY_SIZE(ms_to_errno)) {
+	if (status >= ARRAY_SIZE(ms_to_errno)) {
 		str = "unknown status code";
 		result = -EBADR;
 	} else {