[PATCH -mm] elf: fixup error path in PT_INTERP case

[Alexey Dobriyan]

Fix broken error path if PT_INTERP filename can't be opened for execution.

Reported-by: syzbot+0d1fcd7268b21bace...@syzkaller.appspotmail.com
Signed-off-by: Alexey Dobriyan <adobri...@gmail.com>
---

        fold into elf-free-pt_interp-filename-asap.patch

 fs/binfmt_elf.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -777,7 +777,7 @@ static int load_elf_binary(struct linux_binprm *bprm)
                        kfree(elf_interpreter);
                        retval = PTR_ERR(interpreter);
                        if (IS_ERR(interpreter))
-                               goto out_free_dentry;
+                               goto out_free_ph;
 
                        /*
                         * If the binary is not readable then enforce