[PATCH] USB Serial: Correct a use of out of range variable

Bug found by Coverity:
http://linuxbugs.coverity.com/external/editbugparent.php?viewbugid=2137&checkers%5B%5D=all&status%5B%5D=BUG&status%5B%5D=UNINSPECTED&status%5B%5D=UNKNOWN&status%5B%5D=DON%27T%20CARE&status%5B%5D=PENDING&product%5B%5D=all&component%5B%5D=all&file=&fn=&sortby=reverse_rank&before=&after=&curpage=2&bugid=-1&comment=&reason=Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

drivers/usb/serial/usb-serial.c

@@ -388,7 +388,7 @@ static struct usb_serial *get_free_serial (struct usb_serial *serial, int num_po
 
 		good_spot = 1;
 		for (j = 1; j <= num_ports-1; ++j)
-			if ((serial_table[i+j]) || (i+j >= SERIAL_TTY_MINORS)) {
+			if ((i+j >= SERIAL_TTY_MINORS) || (serial_table[i+j])) {
 				good_spot = 0;
 				i += j;
 				break;