Stumbled upon it while reading code.

ok?

Index: sys/dev/pci/if_mwx.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/if_mwx.c,v
diff -u -p -u -p -r1.5 if_mwx.c
--- sys/dev/pci/if_mwx.c	22 May 2024 16:24:59 -0000	1.5
+++ sys/dev/pci/if_mwx.c	16 Feb 2025 08:45:54 -0000
@@ -2215,7 +2215,7 @@ mwx_mcu_alloc_msg(size_t len)
 	struct mbuf *m;

 	/* Allocate mbuf with enough space */
-	m = m_gethdr(MT_DATA, M_DONTWAIT);
+	m = m_gethdr(M_DONTWAIT, MT_DATA);
 	if (m == NULL)
 		return NULL;
 	if (len + headspace > MHLEN) {