scsi: qedf: Call scsi_done() directly

Conditional statements are faster than indirect calls. Hence call
scsi_done() directly.

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Bart Van Assche <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/scsi/qedf/qedf_io.c

···
 			 "Number of SG elements %d exceeds what hardware limitation of %d.\n",
 			 num_sgs, QEDF_MAX_BDS_PER_CMD);
 		sc_cmd->result = DID_ERROR;
-		sc_cmd->scsi_done(sc_cmd);
+		scsi_done(sc_cmd);
 		return 0;
 	}
 
···
 			  "Returning DNC as unloading or stop io, flags 0x%lx.\n",
 			  qedf->flags);
 		sc_cmd->result = DID_NO_CONNECT << 16;
-		sc_cmd->scsi_done(sc_cmd);
+		scsi_done(sc_cmd);
 		return 0;
 	}
 
···
 		    "Completing sc_cmd=%p DID_NO_CONNECT as MSI-X is not enabled.\n",
 		    sc_cmd);
 		sc_cmd->result = DID_NO_CONNECT << 16;
-		sc_cmd->scsi_done(sc_cmd);
+		scsi_done(sc_cmd);
 		return 0;
 	}
 
···
 			  "fc_remote_port_chkready failed=0x%x for port_id=0x%06x.\n",
 			  rval, rport->port_id);
 		sc_cmd->result = rval;
-		sc_cmd->scsi_done(sc_cmd);
+		scsi_done(sc_cmd);
 		return 0;
 	}
 
···
 
 	io_req->sc_cmd = NULL;
 	sc_cmd->SCp.ptr =  NULL;
-	sc_cmd->scsi_done(sc_cmd);
+	scsi_done(sc_cmd);
 	kref_put(&io_req->refcount, qedf_release_cmd);
 }
 
···
 		goto bad_scsi_ptr;
 	}
 
-	if (!sc_cmd->scsi_done) {
-		QEDF_ERR(&qedf->dbg_ctx,
-			 "sc_cmd->scsi_done for sc_cmd %p is NULL.\n",
-			 sc_cmd);
-		goto bad_scsi_ptr;
-	}
-
 	qedf_unmap_sg_list(qedf, io_req);
 
 	sc_cmd->result = result << 16;
···
 
 	io_req->sc_cmd = NULL;
 	sc_cmd->SCp.ptr = NULL;
-	sc_cmd->scsi_done(sc_cmd);
+	scsi_done(sc_cmd);
 	kref_put(&io_req->refcount, qedf_release_cmd);
 	return;