media: i2c: adv7842: drop check because i2c_unregister_device() is NULL safe

No need to check the argument of i2c_unregister_device() because the
function itself does it.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/i2c/adv7842.c

@@ -3351,27 +3351,16 @@ static const struct v4l2_ctrl_config adv7842_ctrl_free_run_color = {
 static void adv7842_unregister_clients(struct v4l2_subdev *sd)
 {
 	struct adv7842_state *state = to_state(sd);
-	if (state->i2c_avlink)
 	i2c_unregister_device(state->i2c_avlink);
-	if (state->i2c_cec)
 	i2c_unregister_device(state->i2c_cec);
-	if (state->i2c_infoframe)
 	i2c_unregister_device(state->i2c_infoframe);
-	if (state->i2c_sdp_io)
 	i2c_unregister_device(state->i2c_sdp_io);
-	if (state->i2c_sdp)
 	i2c_unregister_device(state->i2c_sdp);
-	if (state->i2c_afe)
 	i2c_unregister_device(state->i2c_afe);
-	if (state->i2c_repeater)
 	i2c_unregister_device(state->i2c_repeater);
-	if (state->i2c_edid)
 	i2c_unregister_device(state->i2c_edid);
-	if (state->i2c_hdmi)
 	i2c_unregister_device(state->i2c_hdmi);
-	if (state->i2c_cp)
 	i2c_unregister_device(state->i2c_cp);
-	if (state->i2c_vdp)
 	i2c_unregister_device(state->i2c_vdp);
 
 	state->i2c_avlink = NULL;