scsi: target: sbp: Remove unneeded semicolon

Eliminate the following coccicheck warning:

./drivers/target/sbp/sbp_target.c:1009:2-3: Unneeded semicolon

Link: https://lore.kernel.org/r/1612316992-71443-1-git-send-email-yang.lee@linux.alibaba.com
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/target/sbp/sbp_target.c

@@ -1006,7 +1006,7 @@ static void tgt_agent_fetch_work(struct work_struct *work)
 			agent->state = AGENT_STATE_SUSPENDED;
 
 		spin_unlock_bh(&agent->lock);
-	};
+	}
 }
 
 static struct sbp_target_agent *sbp_target_agent_register(