scsi: ibmvscsis: Fixed a bug reported by Dan Carpenter

SUPPORTED_FORMATS is 1 << 1 so it's never zero.
Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Michael Cyr <mikecyr@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c

@@ -1978,7 +1978,7 @@ static long ibmvscsis_srp_login(struct scsi_info *vscsi,
 		reason = SRP_LOGIN_REJ_MULTI_CHANNEL_UNSUPPORTED;
 	else if (fmt->buffers & (~SUPPORTED_FORMATS))
 		reason = SRP_LOGIN_REJ_UNSUPPORTED_DESCRIPTOR_FMT;
-	else if ((fmt->buffers | SUPPORTED_FORMATS) == 0)
+	else if ((fmt->buffers & SUPPORTED_FORMATS) == 0)
 		reason = SRP_LOGIN_REJ_UNSUPPORTED_DESCRIPTOR_FMT;
 
 	if (vscsi->state == SRP_PROCESSING)