[RISC-V][HWASAN] Fix incorrect comments (#103728)

These comments were confusing because they do not match the code.

Author: SiFiveHolland

llvm/lib/Target/RISCV/RISCVAsmPrinter.cpp

@@ -679,12 +679,12 @@ void RISCVAsmPrinter::EmitHwasanMemaccessSymbols(Module &M) {
     OutStreamer->emitInstruction(
         MCInstBuilder(RISCV::LBU).addReg(RISCV::X6).addReg(RISCV::X6).addImm(0),
         MCSTI);
-    // Extract tag from X5 and compare it with loaded tag from shadow
+    // Extract tag from pointer and compare it with loaded tag from shadow
     OutStreamer->emitInstruction(
         MCInstBuilder(RISCV::SRLI).addReg(RISCV::X7).addReg(Reg).addImm(56),
         MCSTI);
     MCSymbol *HandleMismatchOrPartialSym = OutContext.createTempSymbol();
-    // X7 contains tag from memory, while X6 contains tag from the pointer
+    // X7 contains tag from the pointer, while X6 contains tag from memory
     OutStreamer->emitInstruction(
         MCInstBuilder(RISCV::BNE)
             .addReg(RISCV::X7)