cipso: kerneldoc warning fix

Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/cipso_ipv4.c

@@ -539,7 +539,7 @@ int cipso_v4_doi_add(struct cipso_v4_doi *doi_def,
 
 /**
  * cipso_v4_doi_free - Frees a DOI definition
- * @entry: the entry's RCU field
+ * @doi_def: the DOI definition
  *
  * Description:
  * This function frees all of the memory associated with a DOI definition.