We need to compare ret variable for negative value. The current code
assigns the boolean to the ret and prints it wrongly in the warning
message.
Reported-by: NAndrey Karpov <karpov@viva64.com>
Cc: Giel van Schijndel <me@mortis.eu>
Cc: Dimitri Gorokhovik <dimitri.gorokhovik@free.fr>
Signed-off-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>