s390/qeth: return proper errno on IO error

When propagating IO errors back to userspace, one error path in
qeth_irq() currently returns '1' instead of a proper errno.

Fixes: 54daaca7 ("s390/qeth: cancel cmd on early error")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/s390/net/qeth_core_main.c

@@ -901,30 +901,30 @@ static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
 				 CCW_DEVID(cdev), dstat, cstat);
 		print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 				16, 1, irb, 64, 1);
-		return 1;
+		return -EIO;
 	}
 
 	if (dstat & DEV_STAT_UNIT_CHECK) {
 		if (sense[SENSE_RESETTING_EVENT_BYTE] &
 		    SENSE_RESETTING_EVENT_FLAG) {
 			QETH_CARD_TEXT(card, 2, "REVIND");
-			return 1;
+			return -EIO;
 		}
 		if (sense[SENSE_COMMAND_REJECT_BYTE] &
 		    SENSE_COMMAND_REJECT_FLAG) {
 			QETH_CARD_TEXT(card, 2, "CMDREJi");
-			return 1;
+			return -EIO;
 		}
 		if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 			QETH_CARD_TEXT(card, 2, "AFFE");
-			return 1;
+			return -EIO;
 		}
 		if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 			QETH_CARD_TEXT(card, 2, "ZEROSEN");
 			return 0;
 		}
 		QETH_CARD_TEXT(card, 2, "DGENCHK");
-			return 1;
+			return -EIO;
 	}
 	return 0;
 }