[S390] qdio: simplify error handling in irq handler

The check for the device status in qdio_establish_handle_irq()
had dead code. Remove the unused code and simplify the error
handling.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
1 file changed