arm64: cpufeatures: Clean up temporary variable to simplify code

Clean up one temporary variable to simplifiy code in capability
detection.

Signed-off-by: Liao Chang <[e-mail]>
Acked-by: Mark Rutland <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Catalin Marinas <[e-mail]>

arch/arm64/kernel/cpufeature.c

···
 	boot_scope = !!(scope_mask & SCOPE_BOOT_CPU);
 
 	for (i = 0; i < ARM64_NCAPS; i++) {
-		unsigned int num;
-
 		caps = cpucap_ptrs[i];
-		if (!caps || !(caps->type & scope_mask))
-			continue;
-		num = caps->capability;
-		if (!cpus_have_cap(num))
+		if (!caps || !(caps->type & scope_mask) ||
+		    !cpus_have_cap(caps->capability))
 			continue;
 
 		if (boot_scope && caps->cpu_enable)