scsi: iscsi: Fix missing scsi_host_put() in error path

Add goto to ensure scsi_host_put() is called in all error paths of
iscsi_set_host_param() function. This fixes a potential memory leak when
strlen() check fails.

Fixes: ce51c81 ("scsi: iscsi: Add strlen() check in iscsi_if_set{_host}_param()")
Signed-off-by: Miaoqian Lin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Mike Christie <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

Author: Yuuoniy

drivers/scsi/scsi_transport_iscsi.c

@@ -3182,11 +3182,14 @@ iscsi_set_host_param(struct iscsi_transport *transport,
 	}
 
 	/* see similar check in iscsi_if_set_param() */
-	if (strlen(data) > ev->u.set_host_param.len)
-		return -EINVAL;
+	if (strlen(data) > ev->u.set_host_param.len) {
+		err = -EINVAL;
+		goto out;
+	}
 
 	err = transport->set_host_param(shost, ev->u.set_host_param.param,
 					data, ev->u.set_host_param.len);
+out:
 	scsi_host_put(shost);
 	return err;
 }