x86/microcode/amd: Remove unneeded pointer arithmetic

Remove unneeded pointer increment arithmetic, the pointer is
set at the beginning of the loop.
Signed-off-by: Nathan Fontenot <nathan.fontenot@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230502174232.73880-1-nathan.fontenot@amd.com

arch/x86/kernel/cpu/microcode/amd.c

@@ -78,8 +78,6 @@ static u16 find_equiv_id(struct equiv_cpu_table *et, u32 sig)
 
 		if (sig == e->installed_cpu)
 			return e->equiv_cpu;
-
-		e++;
 	}
 	return 0;
 }