scsi: storvsc_drv: Call scsi_done() directly

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

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

drivers/scsi/storvsc_drv.c

···
 	scsi_set_resid(scmnd,
 		cmd_request->payload->range.len - data_transfer_length);
 
-	scmnd->scsi_done(scmnd);
+	scsi_done(scmnd);
 
 	if (payload_sz >
 		sizeof(struct vmbus_channel_packet_multipage_buffer))
···
 		 * future versions of the host.
 		 */
 		if (!storvsc_scsi_cmd_ok(scmnd)) {
-			scmnd->scsi_done(scmnd);
+			scsi_done(scmnd);
 			return 0;
 		}
 	}