target/pscsi: remove an unneeded check

blk_get_request() just returns NULL on error, it doesn't return an
ERR_PTR.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

drivers/target/target_core_pscsi.c

@@ -1050,9 +1050,8 @@ pscsi_execute_cmd(struct se_cmd *cmd)
 		req = blk_get_request(pdv->pdv_sd->request_queue,
 				(data_direction == DMA_TO_DEVICE),
 				GFP_KERNEL);
-		if (!req || IS_ERR(req)) {
-			pr_err("PSCSI: blk_get_request() failed: %ld\n",
-					req ? IS_ERR(req) : -ENOMEM);
+		if (!req) {
+			pr_err("PSCSI: blk_get_request() failed\n");
 			ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
 			goto fail;
 		}