hv: fix host call stack dump issue

As scheduler uses its own stack for now,
there is no need to check stack validity,
so wipe it out.

Tracked-On: #2455
Signed-off-by: Tw <wei.tan@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

hypervisor/arch/x86/init.c

@@ -13,7 +13,7 @@
 {                                                                       \
 	asm volatile ("movq %0, %%rsp\n"                                \
 			"pushq %1\n"                                    \
-			"call *%2\n"                                    \
+			"jmpq *%2\n"                                    \
 			 :                                              \
 			 : "r"(rsp), "rm"(SP_BOTTOM_MAGIC), "a"(to));   \
 }