MIPS: oprofile: remove unneeded semicolon in common.c

Fix the following coccicheck warning:

arch/mips/oprofile/common.c:113:2-3: Unneeded semicolon
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/oprofile/common.c

@@ -110,7 +110,7 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
 	case CPU_LOONGSON64:
 		lmodel = &op_model_loongson3_ops;
 		break;
-	};
+	}
 
 	/*
 	 * Always set the backtrace. This allows unsupported CPU types to still