jfs: jump to error_out when filemap_{fdatawait, write_and_wait} fails

filemap_fdatawait/filemap_write_and_wait may fail, so check the return
value and jump to error_out in the case of error.
Signed-off-by: NQuorum Laval <quorum.laval@gmail.com>
Signed-off-by: NDave Kleikamp <dave.kleikamp@oracle.com>

fs/jfs/resize.c

@@ -379,8 +379,14 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
 	 * cached in meta-data cache, and not written out
 	 * by txCommit();
 	 */
-	filemap_fdatawait(ipbmap->i_mapping);
-	filemap_write_and_wait(ipbmap->i_mapping);
+	rc = filemap_fdatawait(ipbmap->i_mapping);
+	if (rc)
+		goto error_out;
+
+	rc = filemap_write_and_wait(ipbmap->i_mapping);
+	if (rc)
+		goto error_out;
+
 	diWriteSpecial(ipbmap, 0);
 
 	newPage = nPages;	/* first new page number */