[SCSI] zfcp: Cleanup of code in zfcp_aux.c

Overall cleanup of zfcp_aux.c to simplify code and follow kernel
coding style.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c
index da472e8..391dd29 100644
--- a/drivers/s390/scsi/zfcp_ccw.c
+++ b/drivers/s390/scsi/zfcp_ccw.c
@@ -20,12 +20,10 @@
  */
 static int zfcp_ccw_probe(struct ccw_device *ccw_device)
 {
-	struct zfcp_adapter *adapter;
 	int retval = 0;
 
 	down(&zfcp_data.config_sema);
-	adapter = zfcp_adapter_enqueue(ccw_device);
-	if (!adapter) {
+	if (zfcp_adapter_enqueue(ccw_device)) {
 		dev_err(&ccw_device->dev,
 			"Setup of data structures failed.\n");
 		retval = -EINVAL;