nfp: clean up return types in kdoc comments

Remove 'Return:' information from functions which no longer
return a value.  Also update name and return types of nfp_nffw_info
access functions.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/netronome/nfp/nfp_net_common.c

@@ -949,8 +949,6 @@ err_free:
  * nfp_net_tx_complete() - Handled completed TX packets
  * @tx_ring:	TX ring structure
  * @budget:	NAPI budget (only used as bool to determine if in NAPI context)
- *
- * Return: Number of completed TX descriptors
  */
 static void nfp_net_tx_complete(struct nfp_net_tx_ring *tx_ring, int budget)
 {

drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nffw.c

@@ -207,7 +207,7 @@ nffw_res_fwinfos(struct nfp_nffw_info_data *fwinf, struct nffw_fwinfo **arr)
  * nfp_nffw_info_open() - Acquire the lock on the NFFW table
  * @cpp:	NFP CPP handle
  *
- * Return: 0, or -ERRNO
+ * Return: pointer to nfp_nffw_info object or ERR_PTR()
  */
 struct nfp_nffw_info *nfp_nffw_info_open(struct nfp_cpp *cpp)
 {
@@ -253,10 +253,8 @@ err_free:
 }
 
 /**
- * nfp_nffw_info_release() - Release the lock on the NFFW table
+ * nfp_nffw_info_close() - Release the lock on the NFFW table and free state
  * @state:	NFP FW info state
- *
- * Return: 0, or -ERRNO
  */
 void nfp_nffw_info_close(struct nfp_nffw_info *state)
 {