virtio: i2c: Check notifier helpers for VIRTIO_CONFIG_IRQ_IDX

Since the driver doesn't support interrupts, we must return early when
index is set to VIRTIO_CONFIG_IRQ_IDX.

Fixes: 544f0278afca ("virtio: introduce macro VIRTIO_CONFIG_IRQ_IDX")
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Message-Id: <d53ec8bc002001eafac597f6bd9a8812df989257.1681790067.git.viresh.kumar@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
1 file changed