IB/iser: Fix typo in comment

Spelling mistake (triple letters) in comment.
Detected with the help of Coccinelle.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Julia Lawall <[email protected]>
Reviewed-by: Sagi Grimberg <[email protected]>
Acked-by: Max Gurtovoy <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

Author: JuliaLawall

drivers/infiniband/ulp/iser/iscsi_iser.h

@@ -363,7 +363,7 @@ struct iser_fr_pool {
  * @cq:                  Connection completion queue
  * @cq_size:             The number of max outstanding completions
  * @device:              reference to iser device
- * @fr_pool:             connection fast registration poool
+ * @fr_pool:             connection fast registration pool
  * @pi_support:          Indicate device T10-PI support
  * @reg_cqe:             completion handler
  */