jffs2: leaking jffs2_summary in function jffs2_scan_medium

In case of an error returned by file_dirty() 's' is not freed as the cleanup
path is skipped.

Reported by Coverity.

Signed-off-by: Christian Engelmayer <christian.engelmayer@frequentis.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c
index 1d437de..7515e73 100644
--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@ -196,7 +196,7 @@
 				if (c->nextblock) {
 					ret = file_dirty(c, c->nextblock);
 					if (ret)
-						return ret;
+						goto out;
 					/* deleting summary information of the old nextblock */
 					jffs2_sum_reset_collected(c->summary);
 				}
@@ -207,7 +207,7 @@
 			} else {
 				ret = file_dirty(c, jeb);
 				if (ret)
-					return ret;
+					goto out;
 			}
 			break;