idpf: fix mismatched free function for dma_alloc_coherent

The mailbox receive path allocates coherent DMA memory with
dma_alloc_coherent(), but frees it with dmam_free_coherent().
This is incorrect since dmam_free_coherent() is only valid for
buffers allocated with dmam_alloc_coherent().

Fix the mismatch by using dma_free_coherent() instead of
dmam_free_coherent

Fixes: e54232d ("idpf: refactor idpf_recv_mb_msg")
Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Madhu Chittim <madhu.chittim@intel.com>
Link: https://patch.msgid.link/20250925180212.415093-1-alok.a.tiwari@oracle.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: aloktiwa

drivers/net/ethernet/intel/idpf/idpf_virtchnl.c

@@ -702,9 +702,9 @@ int idpf_recv_mb_msg(struct idpf_adapter *adapter)
 		/* If post failed clear the only buffer we supplied */
 		if (post_err) {
 			if (dma_mem)
-				dmam_free_coherent(&adapter->pdev->dev,
-						   dma_mem->size, dma_mem->va,
-						   dma_mem->pa);
+				dma_free_coherent(&adapter->pdev->dev,
+						  dma_mem->size, dma_mem->va,
+						  dma_mem->pa);
 			break;
 		}