xfrm: Oops on error in pfkey_msg2xfrm_state()
There are some missing error codes here so we accidentally return NULL
instead of an error pointer. It results in a NULL pointer dereference.
Fixes: df71837d5024 ("[LSM-IPSec]: Security association restriction.")
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: Steffen Klassert <[email protected]>