[JFFS2] Fix error-path leak in summary scan

Signed-off-by: Amit Choudhary <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: David Woodhouse <[e-mail]>

fs/jffs2/scan.c

···
 	if (jffs2_sum_active()) {
 		s = kzalloc(sizeof(struct jffs2_summary), GFP_KERNEL);
 		if (!s) {
+			kfree(flashbuf);
 			JFFS2_WARNING("Can't allocate memory for summary\n");
 			return -ENOMEM;
 		}