diff --git a/lib/hexdump.c b/lib/hexdump.c
index 81b70ed37209697c083247264c9374b143c1749f..69e4b0fdf5e8e8fa899d6254827acea12d9a61fd 100644
--- a/lib/hexdump.c
+++ b/lib/hexdump.c
@@ -48,10 +48,13 @@ EXPORT_SYMBOL(hex_to_bin);
 int hex2bin(u8 *dst, const char *src, size_t count)
 {
 	while (count--) {
-		int hi = hex_to_bin(*src++);
-		int lo = hex_to_bin(*src++);
+		int hi, lo;
 
-		if ((hi < 0) || (lo < 0))
+		hi = hex_to_bin(*src++);
+		if (unlikely(hi < 0))
+			return -EINVAL;
+		lo = hex_to_bin(*src++);
+		if (unlikely(lo < 0))
 			return -EINVAL;
 
 		*dst++ = (hi << 4) | lo;