x86/srso: Remove unnecessary semicolon

scripts/coccinelle/misc/semicolon.cocci reports:

  arch/x86/kernel/cpu/bugs.c:713:2-3: Unneeded semicolon
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230810010550.25733-1-yang.lee@linux.alibaba.com

arch/x86/kernel/cpu/bugs.c

@@ -717,7 +717,7 @@ void update_gds_msr(void)
 	case GDS_MITIGATION_UCODE_NEEDED:
 	case GDS_MITIGATION_HYPERVISOR:
 		return;
-	};
+	}
 
 	wrmsrl(MSR_IA32_MCU_OPT_CTRL, mcu_ctrl);