btrfs-progs: return error when canonicalize_path failed

Error out cmd_start_replace() if canonicalize_path() dstdev failed, add
the missing "goto leave_with_error;"

Signed-off-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.cz>

cmds-replace.c

@@ -214,6 +214,7 @@ static int cmd_start_replace(int argc, char **argv)
 		fprintf(stderr,
 			"ERROR: Could not canonicalize path '%s': %s\n",
 			argv[optind + 1], strerror(errno));
+		goto leave_with_error;
 	}
 
 	if (is_numerical(srcdev)) {