[media] em28xx-input: NULL dereference on error

We call "kfree(ir->i2c_client);" in the error handling and that doesn't
work if "ir" is NULL.

Fixes: 78e719a5f30b ('[media] em28xx-input: i2c IR decoders: improve i2c_client handling')

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/usb/em28xx/em28xx-input.c b/drivers/media/usb/em28xx/em28xx-input.c
index 581f6dad4ca9deef0fa5a0820372238b8a4e3bbd..23f8f6afa2e061a783ee9fa5c0d244c9c6018dcf 100644 (file)
--- a/drivers/media/usb/em28xx/em28xx-input.c
+++ b/drivers/media/usb/em28xx/em28xx-input.c
@@ -712,8 +712,10 @@ static int em28xx_ir_init(struct em28xx *dev)
        em28xx_info("Registering input extension\n");
 
        ir = kzalloc(sizeof(*ir), GFP_KERNEL);
+       if (!ir)
+               return -ENOMEM;
        rc = rc_allocate_device();
-       if (!ir || !rc)
+       if (!rc)
                goto error;
 
        /* record handles to ourself */