V4L/DVB: media: ir-keytable: null dereference in debug code

"ir_dev->props" can be NULL.  We only use raw mode if "ir_dev->props" is
non-NULL and "ir_dev->props->driver_type == RC_DRIVER_IR_RAW".
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/IR/ir-keytable.c

@@ -507,7 +507,8 @@ int __ir_input_register(struct input_dev *input_dev,
 
 	IR_dprintk(1, "Registered input device on %s for %s remote%s.\n",
 		   driver_name, rc_tab->name,
-		   ir_dev->props->driver_type == RC_DRIVER_IR_RAW ? " in raw mode" : "");
+		   (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_IR_RAW) ?
+			" in raw mode" : "");
 
 	return 0;