scsi: iser: Fix @read_stag kernel-doc warning

Correct kernel-doc comments for struct iser_ctrl to prevent warnings:

iser.h:76: warning: Function parameter or struct member 'read_stag' not described in 'iser_ctrl'
iser.h:76: warning: Excess struct member 'reaf_stag' description in 'iser_ctrl'

Signed-off-by: Randy Dunlap <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Acked-by: Sagi Grimberg <[email protected]>
Reviewed-by: Max Gurtovoy <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

include/scsi/iser.h

@@ -63,7 +63,7 @@ struct iser_cm_hdr {
  * @rsvd:         reserved
  * @write_stag:   write rkey
  * @write_va:     write virtual address
- * @reaf_stag:    read rkey
+ * @read_stag:    read rkey
  * @read_va:      read virtual address
  */
 struct iser_ctrl {