IB/iser: iscsi_iser.h: fix kernel-doc warning and spellos

Drop one kernel-doc comment to prevent a warning:

iscsi_iser.h:313: warning: Excess struct member 'mr' description in 'iser_device'

and spell 2 words correctly (buffer and deferred).

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Max Gurtovoy <mgurtovoy@nvidia.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Leon Romanovsky <leonro@nvidia.com>
Cc: linux-rdma@vger.kernel.org
Link: https://lore.kernel.org/r/20231222234623.25231-1-rdunlap@infradead.org
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Acked-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

drivers/infiniband/ulp/iser/iscsi_iser.h

@@ -182,7 +182,7 @@ enum iser_data_dir {
  *
  * @sg:           pointer to the sg list
  * @size:         num entries of this sg
- * @data_len:     total beffer byte len
+ * @data_len:     total buffer byte len
  * @dma_nents:    returned by dma_map_sg
  */
 struct iser_data_buf {
@@ -299,7 +299,6 @@ struct ib_conn;
  *
  * @ib_device:     RDMA device
  * @pd:            Protection Domain for this device
- * @mr:            Global DMA memory region
  * @event_handler: IB events handle routine
  * @ig_list:	   entry in devices list
  * @refcount:      Reference counter, dominated by open iser connections
@@ -389,7 +388,7 @@ struct ib_conn {
  *                    to max number of post recvs
  * @max_cmds:         maximum cmds allowed for this connection
  * @name:             connection peer portal
- * @release_work:     deffered work for release job
+ * @release_work:     deferred work for release job
  * @state_mutex:      protects iser onnection state
  * @stop_completion:  conn_stop completion
  * @ib_completion:    RDMA cleanup completion