scsi: aic79xx: Remove redundant error variable

Return the value from ahd_linux_queue_abort_cmd() directly instead of using
a redundant variable.

Link: https://lore.kernel.org/r/[e-mail]
Reported-by: Zeal Robot <[e-mail]>
Signed-off-by: Minghao Chi <[e-mail]>
Signed-off-by: CGEL ZTE <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/scsi/aic7xxx/aic79xx_osm.c

···
 static int
 ahd_linux_abort(struct scsi_cmnd *cmd)
 {
-	int error;
-	
-	error = ahd_linux_queue_abort_cmd(cmd);
-
-	return error;
+	return ahd_linux_queue_abort_cmd(cmd);
 }
 
 /*