[media] st-hva: fix a copy-and-paste variable name error

The second check for an error on hva->lmi_err_reg appears
to be a copy-and-paste error, it should be hva->emi_err_reg
instead.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Jean-Christophe Trotin <jean-christophe.trotin@st.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/sti/hva/hva-hw.c

@@ -245,7 +245,7 @@ static irqreturn_t hva_hw_err_irq_thread(int irq, void *arg)
 		ctx->hw_err = true;
 	}
 
-	if (hva->lmi_err_reg) {
+	if (hva->emi_err_reg) {
 		dev_err(dev, "%s     external memory interface error: 0x%08x\n",
 			ctx->name, hva->emi_err_reg);
 		ctx->hw_err = true;