Input: synaptics-rmi4 - fix the error return code in rmi_probe_interrupts()

The error return code PTR_ERR(data->irqdomain) is always 0 since
data->irqdomain is equal to NULL in this error handling case.

Fixes: 24d28e4f ("Input: synaptics-rmi4 - convert irq distribution to irq_domain")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>